sendmail anyone?

[Bernie Hoefer]

On 2016-04-18 20:12 EST, Michael Schultheiss wrote:
===
> I'm not familiar with sendmail (I prefer Postfix) but it sounds like its
> timing out on reverse DNS lookup.
===
     Michael has a good thought.  I'd suggest, David, testing each
`step` of the mail delivery process.  How long does it take to execute
each of the following commands?  Do you see an abnormally long time
being taken after a particular step of the telnet command?


dig +nocmd +nocomments ${NameOfSmartRelay}

dig +nocmd +nocomments -x ${IP_AddressOfSmartRelay}

telnet ${IP_AddressOfSmartRelay} 25
 EHLO ${FQDN_OfYourServer}
 MAIL FROM:<${EmailAddressOnYourServer}>
 RCPT TO:<doc.brown at rolls-royce.com>
 DATA
 Subject: Test

 This is the 1st line.
 .
 QUIT


     If all those commands work just fine, then you may want to increase
the sendmail logging level to get a better idea of what is going on.
This document:

<http://www.sendmail.org/~ca/email/doc8.12/op-sh-4.html>

...has a section on log levels.

-- 
Bernie Hoefer
PGP e-mail is welcome!  Get my 1024 bit signature key from:
<http://pgpkeys.mit.edu:11371/pks/lookup?op=get&search=0x446A6F93>.
"The more I know, the more I realize how much I do not understand."

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