From: Ed Sanborn (esanborn@snowshore.com)
Date: Fri Aug 30 2002 - 13:17:45 EDT
Hi folks,
I have a Solaris 8 mail server outside my firewall. I am planning to
deploy another mail server internal to the firewall and have the original
mail server remain as a mail-relay host. At this point I have outbound email
working well from my internal mail server out to the Internet. I have also
successfully
sent an email to someone that is still receiving email on the external
mail server. What I have not been able to do is send email to my new
internal email server. Here's the scenario. 3 systems:
int-mail-server(zoe) ----- firewall(keeper) ----- external mail
server(flyingfox)
I have setup an alias on flyingfox so that:
jblow : jblow@keeper.snowshore.com
Keeper, the firewall, rdr's to zoe internally. I have sniffed packets on Zoe
so I know the SMTP communication is happening. But the problem now is that
the internal mail server, zoe, is not liking the idea of delivering to
'jblow@keeper.snowshore.com'. It doesn't know about 'keeper.snowshore.com'.
See below an email I get back if I try to send to jblow@snowshore.com:
----- The following addresses had permanent fatal errors -----
jblow@keeper.snowshore.com
(reason: 550 5.7.1 Unable to relay for jblow@keeper.snowshore.com)
(expanded from: jblow@snowshore.com)
----- Transcript of session follows -----
... while talking to keeper.snowshore.com.:
>>> RCPT To:<jblow@keeper.snowshore.com>
<<< 550 5.7.1 Unable to relay for jblow@keeper.snowshore.com
550 5.1.1 jblow@keeper.snowshore.com... User unknown
Any ideas how to fix this? I would like to migrate folks over one by one to
the new
mail server or else I'd start mucking with MX records.
Is there something I need to play with on my firewall's sendmail.cf?
-Ed
Ed Sanborn (978) 367-8478
Principal Network Administrator
SnowShore Networks
285 Billerica Rd.
Chelmsford, MA. 01824
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