New Tickets Not Being Created

[CIM]

I've been using OTRS for a very long time. We're currently on 3.0.10 and have been for some time. I'm not aware of any changes either to the OTRS environment or the mail server, but clearly something has gone wrong. Starting Friday at around 10AM we stopped receiving new tickets.

If I manually run fetchmail I see:

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fetchmail: Server certificate verification error: unable to get local issuer certificate
fetchmail: Server certificate verification error: certificate not trusted
fetchmail: Error exchanging credentials
57 messages (19 seen) for otrs at webmail.cimgroup.com.
reading message otrs@server.domain.com:1 of 57 (1019 header octets) (98 body octets).

I'm unfortunately not aware if the certificate errors were being thrown prior to this ticket delivery issue. But, it does seem that fetchmail can login and access the mailbox (the number of messages and number of 'seen').

If I run fetchmail -vv I see a similar certificate error, but it appears to authenticate and then I see

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Trying to connect to 127.0.0.1/25...connected.
fetchmail: SMTP< 220 server.domain.com ESMTP Postfix (Ubuntu)
fetchmail: SMTP> EHLO server.domain.com
fetchmail: SMTP< 250-server.domain.com
fetchmail: SMTP< 250-PIPELINING
fetchmail: SMTP< 250-SIZE 10240000
fetchmail: SMTP< 250-VRFY
fetchmail: SMTP< 250-ETRN
fetchmail: SMTP< 250-STARTTLS
fetchmail: SMTP< 250-ENHANCEDSTATUSCODES
fetchmail: SMTP< 250-8BITMIME
fetchmail: SMTP< 250 DSN
fetchmail: forwarding to localhost
fetchmail: SMTP> MAIL FROM:<user@domain.com> BODY=8BITMIME SIZE=1117
fetchmail: SMTP< 250 2.1.0 Ok
fetchmail: SMTP> RCPT TO:<otrs@localhost>
fetchmail: SMTP< 250 2.1.5 Ok
fetchmail: SMTP> DATA
fetchmail: SMTP< 354 End data with <CR><LF>.<CR><LF>
#
fetchmail: IMAP< )
fetchmail: IMAP< A0011 OK FETCH completed.
fetchmail: IMAP> A0012 FETCH 1 BODY.PEEK[TEXT]
fetchmail: IMAP< * 1 FETCH (BODY[TEXT] NIL)

So, it seems like fetchmail is doing its job, but somewhere between checking the message and getting it to procmail we're losing it.

If I check the procmail logs they are empty after the tickets stopped reaching OTRS. I did flip the entire box but that hasn't helped.

Any suggestions on other log files to look into? Or how to trace these steps.

Thanks,
Manu

[crythias]

What does a search on the error tell you? (this is not an OTRS error).