lmtp socket error

Dan White dwhite at olp.net
Thu Jul 2 09:50:17 EDT 2015

On 07/01/15 22:25 -0400, Shaw, Brian wrote:
>   I'm not sure if this is a cyrus error or a postfix error but, I can't
>find any information about how to resolve it.
>   I'm seeing the following in /var/log/maillog:
>Jul  1 21:52:15 mail-server cyrus-imapd/master[11907]: process
>type:SERVICE name:lmtpunix path:/usr/lib/cyrus-imapd/lmtpd age:0.206s
>pid:12140 exited, status 75

EX_TEMPFAIL? exitcodes.h indicates this could be a whole host of different

>Jul  1 21:52:15 mail-server postfix/lmtp[12036]: EB0C1E5B11:
>to=<user at example.com>, relay=mail-server[/var/lib/imap/socket/lmtp],
>delay=32177, delays=32169/6/2.6/0.02, dsn=4.3.0, status=deferred (host
>mail-server[/var/lib/imap/socket/lmtp] said: 421 4.3.0 lmtpd: Internal
>error: assertion failed: lib/cyrusdb_twoskip.c: 600: record->level <=
>MAXLEVEL (in reply to end of DATA command))
>   The really strange thing is some mail goes through and some does not.
>I haven't found any pattern to it yet.
>   Any suggestions would be greatly appreciated.

Did that particular email (EB0C1E5B11) ever get delivered? If not, there
may be something within the email triggering lmtpd to crash. Are there any
binary headers or unusual content?

If the email is junk, there may be configuration options within postfix to
disallow such emails.

Attach a debugger to trouble shoot lmtpd. See the cyrus.conf and lmtpd
manpages, and:


Dan White

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