Hello,
My company and our parent company are both behind a corporate firewall but
with separate domains and mail servers. As of last Thursday we cannot send
mail to one another. When I do send any of their users mail I get it
returned from our postmaster account as an unknown host. Does this mean
that DNS is unable to recognize their domain as external to ours? The log
shows:
08:07 07:34 SMTPD(10C700DC) [110.50.50.2] connect 110.50.50.50 port 1034
08:07 07:34 SMTPD(10C700DC) [110.50.50.50] HELO mike.mydomain.com
08:07 07:34 SMTPD(10C700DC) [110.50.50.50] MAIL FROM: <[EMAIL PROTECTED]>
08:07 07:34 SMTPD(10C700DC) [110.50.50.50] RCPT TO: <[EMAIL PROTECTED]>
08:07 07:34 SMTPD(10C700DC) [110.50.50.50] D:\IMail\spool\D9ecb0dc.SMD 2238
08:07 07:34 SMTP-(00000564) processing D:\IMail\spool\Q9ecb0dc.SMD
08:07 07:34 SMTP-(00000564) Creating message from Postmaster
08:07 07:34 SMTP-(00000564) finished D:\IMail\spool\Q9ecb0dc.SMD status=2
I can resolve their MX records and the IP addresses of their mail and name
servers through DNS. I can resolve their SOA record.
The only glaring part of their configuration is that their DNS server is not
part of the same domain as their mail server. Anything else I should look
for?
Please visit http://www.ipswitch.com/support/mailing-lists.html
to be removed from this list.
An Archive of this list is available at:
http://www.mail-archive.com/imail_forum%40list.ipswitch.com/
