[PLUG] Mail bounces - error 550 Host unknown

Dale Zeut dzeut at microsharp.com
Mon Apr 1 20:47:55 UTC 2002


Starting last week we have been seeing a lot of bounces like the one 
below from two sites. The problem seems to be DNS but all machines at 
both of the sites are browsing OK and mail gets to us with no pronblem. 
This is happening with several mail servers not just with AOL. The only 
thing common to both sites is their reverse lookups are broke - but 
would that cause a host lookup error?

Thanks in advance
 
Dale Zeutenhorst

Error messages as follows
----------
From: Mail Delivery Subsystem <MAILER-DAEMON at xxxxxx.com>
Date: Mon, 1 Apr 2002 11:27:37 -0800
To: <xxx at xxxxxx.com>
Subject: Returned mail: Host unknown (Name server: aol.com: no data 
known)

The original message was received at Mon, 1 Apr 2002 11:27:36 -0800
from [192.168.1.xx]

   ----- The following addresses had permanent fatal errors -----
<xxxxxx at aol.com>

   ----- Transcript of session follows -----
550 <xxxxxx at aol.com>... Host unknown (Name server: aol.com: no data
known)

From: xxx at xxx.com>
Date: Monday, April 1, 2002 11:38 AM
To: xxxxxx at aol.com
Subject: test

Hi

I'm testing our e-mail system out.




More information about the PLUG mailing list