mail_version = 2.5.5 mail_release_date = 20080902 Last week I worked for some hours to resolve a problem receiving mail from puremail.com. I have a short term workaround now, but for the long term I want to understand the problem and obviate the need for the workaround.
The mail from puremail was sent from ip address 66.81.101.50, which reverses to 'mx.puremail.com'. A forward lookup on 'mx.puremail.com' results in a truncated DNS result and TCP retry, returning 23 ip addresses. From the remote end's view the 220 return message is delayed by minutes; that is how I isolated it to a DNS resolution problem. Running postfix debug on that ip address results in the log entries at the end of this mail. The only redaction in the log is to remove the specific matches for my local networks. It appears from the log that the 220 tried to be sent, but the "smtp_get: EOF" line would seem to indicate that a connection was not open, or had been closed, or something like that; in any case concurrent packet sniffs confirm that the 220 never made it to the network. I implemented a short term workaround by defining 66.81.101.50 as mx.puremail.com in my local /etc/hosts; that at least got mail coming through. I found this post referencing the postfix changelog entry 20050622 that mentions that only the 'best' five MX records are retained from long name server replies. I don't know if this factors into this problem or not. http://archives.neohapsis.com/archives/postfix/2007-11/0032.html I am not having any other problems with slow connects (at least none that have been reported.) DNS is run from two other servers on the local network, and those have been working well for a long time. If someone can give me an idea if this is a configuration problem on my side or something on the puremail side I would very much appreciate it, and TIA. -- Michael =========================== Dec 4 18:18:27 bilbo postfix/smtpd[3919]: connect from mx.puremail.com[66.81.101.50] ... removed various match_hostaddr for local network ... Dec 4 18:18:27 bilbo postfix/smtpd[3919]: match_list_match: mx.puremail.com: no match Dec 4 18:18:27 bilbo postfix/smtpd[3919]: match_list_match: 66.81.101.50: no match Dec 4 18:18:27 bilbo postfix/smtpd[3919]: send attr request = connect Dec 4 18:18:27 bilbo postfix/smtpd[3919]: send attr ident = smtp:66.81.101.50 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: vstream_fflush_some: fd 23 flush 41 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: vstream_buf_get_ready: fd 23 got 25 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: private/anvil: wanted attribute: status Dec 4 18:18:27 bilbo postfix/smtpd[3919]: input attribute name: status Dec 4 18:18:27 bilbo postfix/smtpd[3919]: input attribute value: 0 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: private/anvil: wanted attribute: count Dec 4 18:18:27 bilbo postfix/smtpd[3919]: input attribute name: count Dec 4 18:18:27 bilbo postfix/smtpd[3919]: input attribute value: 1 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: private/anvil: wanted attribute: rate Dec 4 18:18:27 bilbo postfix/smtpd[3919]: input attribute name: rate Dec 4 18:18:27 bilbo postfix/smtpd[3919]: input attribute value: 1 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: private/anvil: wanted attribute: (list terminator) Dec 4 18:18:27 bilbo postfix/smtpd[3919]: input attribute name: (end) Dec 4 18:18:27 bilbo postfix/smtpd[3919]: > mx.puremail.com[66.81.101.50]: 220 srmail2.fni.com ESMTP UCE subject to blockage without notice Dec 4 18:18:27 bilbo postfix/smtpd[3919]: vstream_fflush_some: fd 11 flush 66 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: watchdog_pat: 0x57a980 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: smtp_get: EOF ... removed various match_hostaddr for local network ... Dec 4 18:18:27 bilbo postfix/smtpd[3919]: match_list_match: mx.puremail.com: no match Dec 4 18:18:27 bilbo postfix/smtpd[3919]: match_list_match: 66.81.101.50: no match Dec 4 18:18:27 bilbo postfix/smtpd[3919]: send attr request = disconnect Dec 4 18:18:27 bilbo postfix/smtpd[3919]: send attr ident = smtp:66.81.101.50 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: vstream_fflush_some: fd 23 flush 44 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: vstream_buf_get_ready: fd 23 got 10 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: private/anvil: wanted attribute: status Dec 4 18:18:27 bilbo postfix/smtpd[3919]: input attribute name: status Dec 4 18:18:27 bilbo postfix/smtpd[3919]: input attribute value: 0 Dec 4 18:18:27 bilbo postfix/smtpd[3919]: private/anvil: wanted attribute: (list terminator) Dec 4 18:18:27 bilbo postfix/smtpd[3919]: input attribute name: (end) Dec 4 18:18:27 bilbo postfix/smtpd[3919]: lost connection after CONNECT from mx.puremail.com[66.81.101.50] Dec 4 18:18:27 bilbo postfix/smtpd[3919]: disconnect from mx.puremail.com[66.81.101.50] ===========================
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