localhost.localdomain... example

[Lynn P. Tilby]

Sometimes... BUT not all the time... my mail gets sent with the domain of
@localhost.localdomain

where do I fix this problem!

I have looked at sendmail.cf and cannot readily find the rule which governs this kind of problem...  a lot of rules are close but none fit exactly.

What are the networking files I should look in?

Thanks for your help!

Lynn

HERE IS AN EXAMPLE......

Message 20:
>From MAILER-DAEMON@sol.createv.com  Thu May 31 09:47:16 2001
Date: Thu, 31 May 2001 09:45:55 -0700
From: Mail Delivery Subsystem <MAILER-DAEMON@localhost.localdomain>
To: lynn@localhost.localdomain
MIME-Version: 1.0
Content-Type: multipart/report; report-type=delivery-status;
        boundary="JAA16032.991327555/localhost.localdomain"
Subject: Returned mail: Data format error
Auto-Submitted: auto-generated (failure)

This is a MIME-encapsulated message

--JAA16032.991327555/localhost.localdomain

The original message was received at Thu, 31 May 2001 09:45:54 -0700
from lynn@localhost

   ----- The following addresses had permanent fatal errors -----
jmiller16@home.com

   ----- Transcript of session follows -----
... while talking to mx-rr.home.com.:
>>> MAIL From:<lynn@localhost.localdomain> SIZE=1289
<<< 501 5.1.8 <lynn@localhost.localdomain>... Domain of sender address lynn@loca
lhost.localdomain does not exist
501 jmiller16@home.com... Data format error

--JAA16032.991327555/localhost.localdomain
Content-Type: message/delivery-status

Reporting-MTA: dns; localhost.localdomain
Arrival-Date: Thu, 31 May 2001 09:45:54 -0700

Final-Recipient: RFC822; jmiller16@home.com
Action: failed
Status: 5.5.2
Remote-MTA: DNS; mx-rr.home.com
Diagnostic-Code: SMTP; 501 5.1.8 <lynn@localhost.localdomain>... Domain of sende
r address lynn@localhost.localdomain does not exist
Last-Attempt-Date: Thu, 31 May 2001 09:45:55 -0700

--JAA16032.991327555/localhost.localdomain
Content-Type: message/rfc822

Return-Path: <lynn>
Received: (from lynn@localhost)
        by localhost.localdomain (8.9.3/8.9.3) id JAA16030
        for jmiller16@home.com; Thu, 31 May 2001 09:45:54 -0700
Date: Thu, 31 May 2001 09:45:54 -0700
From: lynn tilby <lynn>
Message-Id: <200105311645.JAA16030@localhost.localdomain>
To: jmiller16@home.com
Subject: 675 Config Q's