[tor-bugs] #33413 [Internal Services/Tor Sysadmin Team]: ida.org can't mail torproject.org ("Connection reset by peer")

[Tor Bug Tracker & Wiki]

#33413: ida.org can't mail torproject.org ("Connection reset by peer")
-----------------------------------------------------+-----------------
     Reporter:  arma                                 |      Owner:  tpa
         Type:  defect                               |     Status:  new
     Priority:  Medium                               |  Milestone:
    Component:  Internal Services/Tor Sysadmin Team  |    Version:
     Severity:  Normal                               |   Keywords:
Actual Points:                                       |  Parent ID:
       Points:                                       |   Reviewer:
      Sponsor:                                       |
-----------------------------------------------------+-----------------
 A person at ida.org is trying to mail my torproject.org address, and the
 mail never arrives. I see these lines in our torproject.org mailserver
 (timestamps are in UTC):
 {{{
 Feb 21 10:58:30 eugeni/eugeni postfix/smtpd[17909]: connect from
 mail5.ida.org[129.246.225.242]
 Feb 21 10:58:32 eugeni/eugeni postfix/smtpd[17909]: SSL_accept error from
 mail5.ida.org[129.246.225.242]: Connection reset by peer
 Feb 21 10:58:32 eugeni/eugeni postfix/smtpd[17909]: lost connection after
 STARTTLS from mail5.ida.org[129.246.225.242]
 Feb 21 10:58:32 eugeni/eugeni postfix/smtpd[17909]: disconnect from
 mail5.ida.org[129.246.225.242] ehlo=1 starttls=0/1 commands=1/2
 }}}
 i.e. it is trying to connect to us, and then it's hanging up.

 The issue repeats, e.g. mail5.ida.org comes back and tries again 60
 minutes later, and the same "Connection reset by peer" issue stops it then
 too.

 For comparison, mail from ida.org directly to moria.csail.mit.edu (e.g. my
 @freehaven.net address) does work (times in EST):
 {{{
 Feb 21 06:32:49 moria postfix/smtpd[64015]: connect from
 mail4.ida.org[129.246.225.241]
 Feb 21 06:32:49 moria postfix/smtpd[64015]: setting up TLS connection from
 mail4.ida.org[129.246.225.241]
 Feb 21 06:32:50 moria postfix/smtpd[64015]: Anonymous TLS connection
 established from mail4.ida.org[129.246.225.241]: TLSv1.2 with cipher
 RC4-SHA (112/128 bits)
 Feb 21 06:32:50 moria postgrey[2193]: action=pass, reason=triplet found,
 client_name=mail4.ida.org, client_address=129.246.225.241,
 sender=xxx at ida.org, recipient=arma at freehaven.net
 Feb 21 06:32:50 moria postfix/smtpd[64015]: 48FD91E03BE:
 client=mail4.ida.org[129.246.225.241]
 Feb 21 06:32:50 moria postfix/cleanup[64106]: 48FD91E03BE: message-
 id=<8o7jf1knqetkgvld41v8dken.1582284768637 at emailplus.mobileiron.com>
 Feb 21 06:32:50 moria postfix/qmgr[2303]: 48FD91E03BE: from=<xxx at ida.org>,
 size=6337, nrcpt=1 (queue active)
 Feb 21 06:32:51 moria postfix/local[64128]: 718821E030F:
 to=<arma at seul.org>, relay=local, delay=2.5, delays=0.19/0/0/2.3,
 dsn=2.0.0, status=sent (delivered to command: /usr/bin/procmail)
 Feb 21 06:32:51 moria postfix/qmgr[2303]: 718821E030F: removed
 }}}
 (moria's log mentions mail4, not mail5, but eugeni is seeing failures from
 both mail4 and mail5.)

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33413>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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