I just upgraded my server from FreeBSD 10.3 to 11.1. It's now running Sendmail 8.15.2 and OpenSSL 1.0.2k-freebsd 26 Jan 2017.
Since the upgrade, sending mail to my server is failing. I cranked up the log level to show all incoming and outgoing SMTP commands using
/usr/sbin/sendmail -d95.99 -bD -X /tmp/test.log. A typical incoming connection looks like this:
34431 >>> 220 localhost.FKEinternet.net ESMTP Sendmail 8.15.2/8.15.2; Thu, 8 Mar 2018 11:35:32 -0500 (EST) 34431 <<< EHLO [192.168.14.73] 34431 >>> 250-localhost.FKEinternet.net Hello rrcs-184-74-100-26.nys.biz.rr.com [22.214.171.124], pleased to meet you 34431 >>> 250-ENHANCEDSTATUSCODES 34431 >>> 250-PIPELINING 34431 >>> 250-8BITMIME 34431 >>> 250-SIZE 34431 >>> 250-DSN 34431 >>> 250-ETRN 34431 >>> 250-STARTTLS 34431 >>> 250-DELIVERBY 34431 >>> 250 HELP 34431 <<< STARTTLS
/var/log/messages I find
Mar 8 11:35:32 Dreamer kernel: pid 34431 (sendmail), uid 0: exited on signal 11
Is there a crash log somewhere I can look at to figure out what's going on? What else can I do to debug this problem?
Other than instances of
pkg-static.core created during the server upgrade two days ago,
find / -name "*.core" -ls did not return any core files less than a year old. Where there's a sendmail instance crashing with every piece of mail being attempted for delivery, I would have expected to find one not more than a few minutes old. What would be likely to prevent the
.core files from being created?