Hi,

I'm trying to figure out why the remote server is responding with a
"lost connection" error without any further information to indicate
why the message was deferred.

If I use telnet and replicate the connection process, I can send a
test message. However, messages sent from remote users and forwarded
through our server via a .forward file to this remote user's account
are deferred with a simple "lost connection" response.

How can I get further information as to what the cause may be? Does
the below debug help? It appears that it's being deferred immediately
after the MAIL FROM, as this debug seems to indicate?

Could the TLS error below be the cause? I believe that is a separate
issue I have to address, and otherwise seems fine with other servers.

smtp_stream_setup: maxtime=300 enable_deadline=0
> mail.sagebiz.com[66.252.104.194]:25: EHLO email.example.com
vstream_fflush_some: fd 15 flush 39
vstream_buf_get_ready: fd 15 got 201
< mail.sagebiz.com[66.252.104.194]:25: 250-sagebiz.com
< mail.sagebiz.com[66.252.104.194]:25: 250-SIZE 30000000
< mail.sagebiz.com[66.252.104.194]:25: 250-ETRN
< mail.sagebiz.com[66.252.104.194]:25: 250-ENHANCEDSTATUSCODES
< mail.sagebiz.com[66.252.104.194]:25: 250-X-IMS 3 63253
< mail.sagebiz.com[66.252.104.194]:25: 250-DSN
< mail.sagebiz.com[66.252.104.194]:25: 250-VRFY
< mail.sagebiz.com[66.252.104.194]:25: 250-AUTH LOGIN NTLM SCRAM-MD5 CRAM-MD5
< mail.sagebiz.com[66.252.104.194]:25: 250-AUTH=LOGIN
< mail.sagebiz.com[66.252.104.194]:25: 250-X-AVU 1385496485
< mail.sagebiz.com[66.252.104.194]:25: 250 8BITMIME
server features: 0x900b size 30000000
smtp_stream_setup: maxtime=300 enable_deadline=0
> mail.sagebiz.com[66.252.104.194]:25: MAIL FROM:<jenni...@example.com> 
> SIZE=47452
smtp_stream_setup: maxtime=300 enable_deadline=0 vstream_fflush_some:
fd 15 flush 57
warning: TLS library problem: 16575:error:1408F10B:SSL
routines:SSL3_GET_RECORD:wrong version number:s3_pkt.c:337: smtp_get:
EOF
connect to subsystem private/defer
send attr nrequest = 0
send attr flags = 0
send attr queue_id = 1A8AB4055E
send attr original_recipient = 39...@example.com
send attr recipient = sangel...@denhallinn.com
send attr offset = 430
send attr dsn_orig_rcpt = rfc822;39...@example.com
send attr notify_flags = 0
send attr status = 4.4.2
send attr diag_type =
send attr diag_text =
send attr mta_type =
send attr mta_mname =
send attr action = delayed
send attr reason = lost connection with
mail.sagebiz.com[66.252.104.194] while sending MAIL FROM
vstream_fflush_some: fd 16 flush 356
vstream_buf_get_ready: fd 16 got 10

I've also included the successful telnet test:

$ telnet mail.sagebiz.com 25
Trying 66.252.104.194...
Connected to mail.sagebiz.com.
Escape character is '^]'.
220 mail.sagebiz.com MailSite ESMTP Receiver Version 9.5.4.12 Ready
ehlo mail.example.com
250-sagebiz.com
250-SIZE 30000000
250-ETRN
250-ENHANCEDSTATUSCODES
250-X-IMS 3 63253
250-DSN
250-VRFY
250-AUTH LOGIN NTLM SCRAM-MD5 CRAM-MD5
250-AUTH=LOGIN
250-X-AVU 1385496485
250-STARTTLS
250 8BITMIME
mail from:<jenni...@example.com>
250 2.0.0 <jenni...@example.com> OK
rcpt to:sangel...@denhallinn.com
250 2.0.0 <sangel...@denhallinn.com> OK
quit
221 2.0.0 mail.sagebiz.com closing
Connection closed by foreign host.

Thanks,
Alex

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