[CentOS] sendmail Deferred mail - reason unknown
scarolan at gmail.com
Mon Dec 15 17:41:15 UTC 2008
> #1 - turn your sendmail logging/debugging setting up as high as
> it will go for just long enough to capture some of these events.
> (then turn it back to its previous setting)
> #2 - try using script and then telnet to capture an SMTP session
> (Done by hand) with the MTA at the receiving end. This can be a
> little tricky and requires a good understanding of how SMTP
> transactions are done so you can emulate it by hand.
Thank you all for the suggestions, I think we may have pinned down the
problem. This list is a great resource, props to all the experienced
users who put in time answering questions here. :)
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