Bug#723814: exim4: Some incoming connections refused with "(gnutls_handshake): An unexpected TLS packet was received."

[Nikolaus Rath]

Package: exim4
Version: 4.80-7
Severity: normal

Wheezy's exim4 rejects incoming SMTP connections from some servers with
the following message:

2013-09-20 01:40:45 TLS error on connection from remote.runningguru.com [71.33.250.180] (gnutls_handshake): An unexpected TLS packet was received.

The affected remote servers typically retry over and over again, and get
rejected over and over again, so that the email never gets delivered.

As a temporary workaround, I am currently adding exceptions that prevent
exim from advertising TLS to these host whenever I see a problem in the logs,
but that is not really a good solution.

Best,
Nikolaus


-- System Information:
Debian Release: 7.1
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 3.9-0.bpo.1-amd64 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages exim4 depends on:
ii  debconf [debconf-2.0]                                          1.5.49
pn  exim4-base                                                     <none>
pn  exim4-daemon-light | exim4-daemon-heavy | exim4-daemon-custom  <none>

exim4 recommends no packages.

exim4 suggests no packages.