Hello, I have just upgraded a machine from 5.2.1 to 5.3, and I think I _may_ have stomped on something in /etc/mail during mergemaster. The symptom is this: mail to other machines on the LAN worked yesterday, and is broken after the upgrade. Mail to the wider Internet continues to work.
I have a series of mails in the queue, failing on delivery attempts like this: Dec 16 11:19:08 bert sendmail[1043]: iBF403Wb004664: to=<[EMAIL PROTECTED]>,<[EMAIL PROTECTED]>,<[EMAIL PROTECTED]>, ctladdr=<[EMAIL PROTECTED]> (1001/1001), delay=20:49:05, xdelay=00:00:00, mailer=esmtp, pri=4770661, relay=tsb.coremedicalsolutions.com., dsn=4.0.0, stat=Deferred: Name server: tsb.coremedicalsolutions.com.: host name lookup failure Running sendmail on the queue in verbose mode gives this: Running /var/spool/mqueue/iBG097Eq000666 (sequence 1 of 118) <[EMAIL PROTECTED]>... Connecting to tsb.coremedicalsolutions.com. via esmtp... [long pause] <[EMAIL PROTECTED]>... Deferred: Name server: tsb.coremedicalsolutions.com.: host name lookup failure Running /var/spool/mqueue/iBFNpkMQ052047 (sequence 2 of 118) <[EMAIL PROTECTED]>... Deferred: Name server: tsb.coremedicalsolutions.com.: host name lookup failure [...] There are numerous hits from Google on very similar issues, but almost all the solutions point at DNS problems. If there is a local DNS issue, I can't find it. > dig coremedicalsolutions.com. mx [...] coremedicalsolutions.com. 3600 IN MX 10 tsb.coremedicalsolutions.com. [...] tsb.coremedicalsolutions.com. 900 IN A 192.168.10.69 > dig -x 192.168.10.69 [...] 69.10.168.192.in-addr.arpa. 900 IN PTR tsb.coremedicalsolutions.com. > dig bert.coremedicalsolutions.com. [...] bert.coremedicalsolutions.com. 900 IN A 192.168.10.78 > dig -x 192.168.10.78 [...] 78.10.168.192.in-addr.arpa. 900 IN PTR bert.coremedicalsolutions.com. That is, both the originating machine (bert) and the receiver (tsb) have forward and backward DNS entries. Can anyone suggest the next step in diagnosing this? -- Paul. w http://logicsquad.net/ h http://paul.hoadley.name/
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