The one that works-
2014:09:14-00:20:07 astaro-dr postfix/smtp[22817]: 28EE934202: to=, relay=127.0.0.1[127.0.0.1]:25, delay=0.03, delays=0.02/0/0/0.01, dsn=2.0.0, status=sent (250 OK id=1XT3AN-0005w2-0a)
The one that doesn't-
2014:09:14-00:22:54 astaro postfix/smtp[977]: D0C19203E0: to=, relay=myhost.com[66.35.42.65]:25, delay=0, delays=0/0/0/0, dsn=5.4.6, status=bounced (mail for [myhost.com]:25 loops back to myself)
In the one that works, the host IP address is the localhost. In the one that doesn't work, it's the external IP address for the domain myhost. After spending some time with Sophos tech support, and comparing the host settings for both environments, I cannot figure out where, in the server where this isn't working, to set the host IP address to use the localhost address instead of the external address.
As a note, all SMTP traffic going through our firewall works fine, it is only the alerts and reports generated by Security Gateway that are bouncing.
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