Error while sending mail

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I have a system which generates emails and sends them to a number of various domain groups, which have various mail server accounts. Only to some of the groups the mails are delivered and some of the groups are not receiving the mail. Since the mail is delivered to some of the groups we can assume that the functionality or coding is working good. Could it be some issue with the mail configuration or some problem with the mail server? Please help

Posted 23-Jul-13 22:59pm

sacraj

Updated 23-Jul-13 23:06pm

Guirec

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Guirec · Answer 1 · 2013-07-23T23:11:00

Are you using smtp?
SMTP relaying functionality can be blocked at many levels of infrastructure. It is most probably a firewall or domain controller configuration issue (issue for you , srcurity for infra guys :) ).

Now if you are using .net it is quite easy to catch the different exceptions that the Send method is possibly throwing and SMTP error messages are generally quite good...