We had a user from the outside that had sent an email to our company but it never got delivered and was bounced back to him with the following error message -
---- Transcript of session follows -----
451 4.4.1 reply: read error from OUR MAIL SEVER
... Deferr ed: Co nnection timed out with
OUR OTHER MAIL SERVER
Warning: message still undelivered after 4 hours Will keep trying until
message is 5 days old
The same user was able to send email to a differnet company addrees the day before, the same day and the day after so it must have been something to do with the particular email??
Is the above error due to a problem on our end or on their end? Our mail servers are BSD boxes running Postfix.
Thank for any help you can offer.