[Mailman-Users] FW: Mail delivery failed: returning messagetosender

Mark Sapiro mark at msapiro.net
Thu May 8 17:42:00 CEST 2008

Mark Sapiro wrote:

>Jeff Hedglen wrote:
>>Here is the error message I receive - 
>>This message was created automatically by mail delivery software.
>>A message that you sent could not be delivered to one or more of its
>>recipients. This is a permanent error. The following address(es) failed:
>>  sbyam at stbartsfw.org
>>    SMTP error from remote mail server after RCPT TO:<sbyam at stbartsfw.org>:
>>    host []: 451 Temporary local problem -
>>please try later:
>>    retry timeout exceeded
>That doesn't give a lot of help. The mail log might have more.
>But since the 451 comes after the RCPT TO:<sbyam at stbartsfw.org> and
>before the DATA, we can see that the problem is with the address and
>not with delivery. Perhaps the aliases database has become corrupted
>or something has changed in the MTA configuration. In any case, this
>problem is with something to do with the MTA at, and
>not directly with Mailman.

I looked a bit further.

The primary MX for stbartsfw.org is mail.stbartsfw.org. This MX
apparently receives the mail for sbyam at stbartsfw.org and relays it to Exim answers the port 25 connect to,
but it returns the "451 Temporary local problem - please try later:"
to any RCPT TO: that I tried. Possibly it returns 451 for any
'invalid' address, but in any case it appears it is not even trying to
deliver mail to sbyam at stbartsfw.org.

Mark Sapiro <mark at msapiro.net>        The highway is for gamblers,
San Francisco Bay Area, California    better use your sense - B. Dylan

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