Sendmail error mesage

Steve Bertrand iaccounts at
Thu Oct 25 15:20:15 PDT 2007

> What does "451 Could not complete sender verify callout" mean ?

I have seen this before when a mail server is trying to send email
from itself but does not listen on port 25.

Do you have an SMTP server running on port 25 that at least the
localhost can reach?


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