> -----Original Message-----
> From: Chris Mason
> Sent: Wednesday, February 05, 2003 3:42 PM
> Subject: RE: Mail is refused due to domain
> 
> 
> Of course it can't talk to the nameserver, it's a 
> non-existant domain behind a firewall.
> 
> The question is, why does it want to? Why doesn't the mail 
> server present itself as a company.ocm as that's the masquerade?
> 
> 

Masquerading an e-mail envelope vs. the EHLO negotiation between the MTA's
are two different things. Sendmail (like most mta's) is going to make a call
to the resolver libs to determine the FQDN (canonical domain name) of the
host its running on at startup. It's this name that is used during the EHLO
negotiation with the remote MTA. IF the masq'd canonical domain name is not
resolvable by the external MTA's resolver libs, then (if configured) the
remote MTA could reject your e-mail.

With the above in mind, try adding the following to your sendmail.mc file.
Change mail.mydomain.com to a resolvable FQDN. i.e. a FQDN that resolves
from an external source.

define(`confDOMAIN_NAME', `mail.mydomain.com')dnl

Steve Cowles



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