Seeing a problem with inbound delivery from relays. Incoming client
connections are timing out, but I'm able to telnet to port 25 on my host
and immediately get the 220 banner every time. Sometimes the connection
times out before the 220 banner is displayed, sometimes it doesn't and
the client never sends a HELO/EHLO. This is only happening to *specific*
clients. The majority of clients are able to deliver mail with no
problems. Sometimes there is a 421 error, sometimes it just throws
"timeout after CONNECT from unknown".

Version is 2.5.4, and I've disabled all of my client restrictions
including a check_policy_service IP Blocker.

In the debug output below, you can see how one client gets the 220
banner, and the other doesn't, but the result is the same, a 421.

Digging deeper, a packet capture shows that there is an EHLO from the
client, but it appears to come before the 220 sometimes.

debug output follows, then snoop, then postconf -n is at the bottom.

Many thanks

Debug output:

Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info] connect
from unknown[134.53.6.74]
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? localhost
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 127.0.0.1
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.1.0/24
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.4.0/24
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.188.0/24
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.3.38
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.5.24
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.115
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.139
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.25
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.34
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.55
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.67
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.72
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.74
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.15
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.15
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.23
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.23
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.49
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.49
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.201
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.51
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.52
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.53
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.54
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.54
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.56
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.57
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.59
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.85.93
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.120.49
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.160.20
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.160.66
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 64.14.35.134
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 66.111.5.152
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 69.25.199.3
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 207.66.21.3
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 205.237.106.3
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 69.25.199.33
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 149.72.3.15
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info]
match_list_match: 134.53.6.74: no match
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info] send
attr ident = smtp:134.53.6.74
Mar  9 18:38:03 pmx4 postfix/smtpd[13358]: [ID 197553 mail.info] >
unknown[134.53.6.74]: 220 smtp-in.montclair.edu ESMTP Postfix
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info] >
unknown[134.53.6.74]: 421 4.4.2 smtp-in.montclair.edu Error: timeout
exceeded
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? localhost
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 127.0.0.1
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.1.0/24
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.4.0/24
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.188.0/24
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.3.38
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.5.24
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.115
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.139
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.25
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.34
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.55
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.67
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.72
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.20.74
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.15
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.15
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.23
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.23
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.49
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.56.49
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.201
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.51
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.52
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.53
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.54
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.54
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.56
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.57
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.84.59
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.85.93
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.120.49
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.160.20
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 130.68.160.66
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 64.14.35.134
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 66.111.5.152
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 69.25.199.3
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 207.66.21.3
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 205.237.106.3
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 69.25.199.33
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_hostaddr: 134.53.6.74 ~? 149.72.3.15
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
match_list_match: 134.53.6.74: no match
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info] send
attr ident = smtp:134.53.6.74
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info] timeout
after CONNECT from unknown[134.53.6.74]
Mar  9 18:41:03 pmx4 postfix/smtpd[13243]: [ID 197553 mail.info]
disconnect from unknown[134.53.6.74]

snoop

  1   0.00000 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
  2   0.00002         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
  3   0.02686 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
  4   0.41173 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
  5   0.00004         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
  6   0.02697 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
  7   0.67028         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
  8   0.02626 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
  9   0.00272         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37488 220 smtp-in.montclai
 10   0.02669 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
 11   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 12   0.00012 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37488 EHLO mualmarp02.mcs.
 13   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 14   0.38417         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 15   0.02629 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
 16   0.00270         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37500 220 smtp-in.montclai
 17   0.02671 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
 18   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 19   0.00005 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37500 EHLO mualmarp02.mcs.
 20   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 21   1.16005 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37488 EHLO mualmarp02.mcs.
 22   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 23   0.44001 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37500 EHLO mualmarp02.mcs.
 24   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 25   0.19410         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37488 220 smtp-in.montclai
 26   0.02665 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
 27   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 28   0.40614         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37500 220 smtp-in.montclai
 29   0.02667 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
 30   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 31   0.72695 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37488 EHLO mualmarp02.mcs.
 32   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 33   0.43901 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37500 EHLO mualmarp02.mcs.
 34   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 35   2.88756         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37488 220 smtp-in.montclai
 36   0.02659 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
 37   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 38   0.29511 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37488 EHLO mualmarp02.mcs.
 39   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 40   0.11519         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37500 220 smtp-in.montclai
 41   0.02676 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
 42   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 43   0.29683 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37500 EHLO mualmarp02.mcs.
 44   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 45   6.85726 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37488 EHLO mualmarp02.mcs.
 46   0.00002         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 47   0.43893 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37500 EHLO mualmarp02.mcs.
 48   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 49   0.95610         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37488 220 smtp-in.montclai
 50   0.02676 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
 51   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 52   0.40722         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37500 220 smtp-in.montclai
 53   0.02666 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
 54   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 55  12.73606 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37488 EHLO mualmarp02.mcs.
 56   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 57   0.43901 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37500 EHLO mualmarp02.mcs.
 58   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 59   4.37262         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37488 220 smtp-in.montclai
 60   0.02660 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
 61   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 62   0.41880         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37500 220 smtp-in.montclai
 63   0.02666 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
 64   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 65  23.90072 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37488 EHLO mualmarp02.mcs.
 66   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 67   0.43881 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37500 EHLO mualmarp02.mcs.
 68   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 69  11.19762         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37488 220 smtp-in.montclai
 70   0.02667 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
 71   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 72   0.42817         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37500 220 smtp-in.montclai
 73   0.02708 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
 74   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 75  46.24821 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37488 EHLO mualmarp02.mcs.
 76   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 77   0.43788 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37500 EHLO mualmarp02.mcs.
 78   0.00002         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 79  12.84499         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37488 220 smtp-in.montclai
 80   0.02663 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
 81   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 82   0.42334         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37500 220 smtp-in.montclai
 83   0.02684 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
 84   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 85  59.54051         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37488 220 smtp-in.montclai
 86   0.02679 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
 87   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 88   0.41766         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37500 220 smtp-in.montclai
 89   0.02667 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
 90   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 91  42.96453 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37488 EHLO mualmarp02.mcs.
 92   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 93   0.43907 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=37500 EHLO mualmarp02.mcs.
 94   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
 95  16.12842         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37488 220 smtp-in.montclai
 96   0.02678 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
 97   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
 98   0.43175         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37500 220 smtp-in.montclai
 99   0.02669 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
100   0.00002         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
101  49.68449         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37488 421 4.4.2 smtp-in.mo
102   0.01883 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
103   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37488
104   0.00837 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37488
105   0.41267         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=37500 421 4.4.2 smtp-in.mo
106   0.01709 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
107   0.00002         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=37500
108   0.00996 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=37500
109 1498.44828 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
110   0.00008         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
111   0.02686 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
112   1.10429         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
113   0.02634 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
114   0.00278         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=60296 220 smtp-in.montclai
115   0.02663 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
116   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
117   0.00005 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=60296 EHLO mualmarp02.mcs.
118   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
119   1.60001 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=60296 EHLO mualmarp02.mcs.
120   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
121   0.63877         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=60296 220 smtp-in.montclai
122   0.02667 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
123   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
124   1.15426 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=60296 EHLO mualmarp02.mcs.
125   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
126   3.33898         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=60296 220 smtp-in.montclai
127   0.02670 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
128   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
129   0.28266 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=60296 EHLO mualmarp02.mcs.
130   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
131   7.29509 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=60296 EHLO mualmarp02.mcs.
132   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
133   1.41550         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=60296 220 smtp-in.montclai
134   0.02669 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
135   0.00002         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
136  13.15017 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=60296 EHLO mualmarp02.mcs.
137   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
138   4.83634         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=60296 220 smtp-in.montclai
139   0.02660 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
140   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
141  24.32092 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=60296 EHLO mualmarp02.mcs.
142   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
143  11.66879         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=60296 220 smtp-in.montclai
144   0.02673 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
145   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
146  46.67235 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=60296 EHLO mualmarp02.mcs.
147   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
148   2.18359 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
149   0.00005         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
150   0.02690 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
151   1.10017         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
152   0.02620 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
153   0.00263         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=48771 220 smtp-in.montclai
154   0.02698 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
155   0.00000 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=48771 EHLO mualmarp02.mcs.
156   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
157   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
158   1.60000 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=48771 EHLO mualmarp02.mcs.
159   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
160   0.62648         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=48771 220 smtp-in.montclai
161   0.02679 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
162   0.00003         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
163   1.16687 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=48771 EHLO mualmarp02.mcs.
164   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
165   3.31733         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=48771 220 smtp-in.montclai
166   0.02674 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
167   0.00003         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
168   0.30386 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=48771 EHLO mualmarp02.mcs.
169   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
170   2.88534         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=60296 220 smtp-in.montclai
171   0.02687 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
172   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
173   4.38279 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=48771 EHLO mualmarp02.mcs.
174   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
175   1.39055         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=48771 220 smtp-in.montclai
176   0.02690 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
177   0.00005         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
178  13.17555 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=48771 EHLO mualmarp02.mcs.
179   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
180   4.80912         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=48771 220 smtp-in.montclai
181   0.02666 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
182   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
183  24.34828 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=48771 EHLO mualmarp02.mcs.
184   0.00003         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
185  11.63409         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=48771 220 smtp-in.montclai
186   0.02667 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
187   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
188   0.16222         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=60296 220 smtp-in.montclai
189   0.02668 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
190   0.00004         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
191  43.38207 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=60296 EHLO mualmarp02.mcs.
192   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
193   3.13599 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=48771 EHLO mualmarp02.mcs.
194   0.00003         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
195  13.28461         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=48771 220 smtp-in.montclai
196   0.02675 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
197   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
198   0.16323         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=60296 220 smtp-in.montclai
199   0.02671 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
200   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
201  50.09998         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=60296 421 4.4.2 smtp-in.mo
202   0.01781 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
203   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=60296
204   0.00930 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=60296
205   9.67572         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=48771 220 smtp-in.montclai
206   0.02670 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
207   0.00000         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
208  43.40364 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C
port=48771 EHLO mualmarp02.mcs.
209   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
210  16.57815         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=48771 220 smtp-in.montclai
211   0.02673 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
212   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
213  50.13373         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R
port=48771 421 4.4.2 smtp-in.mo
214   0.01840 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771
215   0.00001         pmx4 -> mualmarp02.mcs.muohio.edu SMTP R port=48771
216   0.00863 mualmarp02.mcs.muohio.edu -> pmx4         SMTP C port=48771


# postconf -n
alias_database = dbm:/opt/pmx/postfix/etc/aliases
alias_maps = dbm:/opt/pmx/postfix/etc/aliases
bounce_queue_lifetime = 3d
command_directory = /opt/pmx/postfix/sbin
config_directory = /opt/pmx/postfix/etc
content_filter = pmx:127.0.0.1:10025
daemon_directory = /opt/pmx/postfix/libexec
debug_peer_level = 10
debug_peer_list = 134.53.6.74,164.76.99.43
disable_dns_lookups = no
html_directory = no
inet_protocols = ipv4
mail_owner = postfix
mailq_path = /opt/pmx/postfix/bin/mailq
manpage_directory = /opt/pmx/postfix/man
message_size_limit = 20480000
myhostname = smtp-in.montclair.edu
mynetworks = localhost 127.0.0.1 130.68.1.0/24 130.68.4.0/24
130.68.188.0/24 130.68.3.38 130.68.5.24 130.68.20.115 130.68.20.139
130.68.20.25 130.68.20.34 130.68.20.55 130.68.20.67 130.68.20.72
130.68.20.74 130.68.56.15 130.68.56.15 130.68.56.23 130.68.56.23
130.68.56.49 130.68.56.49 130.68.84.201 130.68.84.51 130.68.84.52
130.68.84.53 130.68.84.54 130.68.84.54 130.68.84.56 130.68.84.57
130.68.84.59 130.68.85.93 130.68.120.49 130.68.160.20 130.68.160.66
64.14.35.134 66.111.5.152 69.25.199.3 207.66.21.3 205.237.106.3
69.25.199.33 149.72.3.15
newaliases_path = /opt/pmx/postfix/bin/newaliases
queue_directory = /opt/pmx/postfix/var/spool/mqueue
readme_directory = /opt/pmx/postfix/doc
recipient_canonical_maps = dbm:/opt/pmx/postfix/etc/canonical
recipient_delimiter = +
relay_domains = $mydestination, montclair.edu
relay_recipient_maps = dbm:/opt/pmx/postfix/etc/valid_recipients_default
dbm:/opt/pmx/postfix/etc/valid_recipients
sendmail_path = /opt/pmx/postfix/sbin/sendmail
setgid_group = postdrop
smtp_connection_cache_destinations = montclair.edu
smtp_generic_maps = pcre:/opt/pmx/postfix/etc/smtp_generic_maps
smtp_host_lookup = native,dns
smtpd_peername_lookup = no
smtpd_recipient_restrictions = reject_unauth_destination permit
transport_maps = dbm:/opt/pmx/postfix/etc/transport
unknown_local_recipient_reject_code = 550

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