[TriLUG] Any sendmail gurus out there?

[Dave Sorenson]

A total kludge would be to just put the IP in your smarthosts directive 
until you can figure out what is wrong.

Dave

Brian Daniels wrote:
> Sendmail on Fedora 10 is doing something weird...
>
> I use mutt for my local mail, and sendmail with a smarthost setting to send 
> messages on their way.  This worked fine in Fedora 8.
>
> I recently upgraded (?) to Fedora 10, and copied over my sendmail.mc file to 
> recreate my config.  It has the line:
> define(`SMART_HOST',`[sasl.smtp.pobox.com]')dnl
> which has the [] so that sendmail will send directly to that address and not 
> attempt a MX lookup.  
>
> This works fine for a while, with messages sending as expected:
>
> Dec  4 13:27:19 localhost sendmail[13531]: STARTTLS=client, 
> relay=sasl.smtp.pobox.com., version=TLSv1/SSLv3, verify=OK, 
> cipher=DHE-RSA-AES256-SHA, bits=256/256
> Dec  4 13:27:20 localhost sendmail[13531]: mB4IRIWT013529: 
> to=<test at test.com>, delay=00:00:02, xdelay=00:00:02, mailer=relay, 
> pri=120723, relay=sasl.smtp.pobox.com. [208.72.237.25], dsn=2.0.0, stat=Sent 
> (Ok: queued as 6F4421818B)
>
>
> But later messages will start getting stuck in the queue:
>
> Dec  4 09:15:26 localhost sendmail[13093]: mB4EFPhY013091: to=<test at test.com>, 
> delay=00:00:01, xdelay=00:00:00, mailer=relay, pri=121215, 
> relay=[sasl.smtp.pobox.com], dsn=4.0.0, stat=Deferred: Name server: 
> [sasl.smtp.pobox.com]: host name lookup failure
>
> Sendmail appears to be trying to resolve [sasl.smtp.pobox.com], brackets and 
> all.  Which never works, and the messages stay stuck there until I restart 
> sendmail.  At which point it suddenly remembers how it's supposed to work and 
> sends the messages out.
>
> I'm about ready to make an hourly cron job to restart sendmail, but I hate 
> treating symptoms...
>
> --Brian
>
>