We are using a SBS 2003 with a Microsoft Exchange server.
In front we have a Sonic Fire Wall TZ 170SP.
We are experiencing issues with Comcast customers to receive our emails.
I called Comcast and our carrier ATT and both sites are telling me that they dont block our Emails.
I dont know were to start to look for issues. All other non Comcast customers ~4000 have no issues with receiving our mails.
&@comcast.net on 11.06.2008 12:31
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Would you have any guide lines?