[Mailman-Users] Was Does mailman support a MySQL backend? - Now MTA tweaking!

[J C Lawrence]

On Mon, 23 Sep 2002 12:32:10 +0100 
Angel Gabriel <badmangabriel at lycos.co.uk> wrote:

> THREE T3's and a couple of T1's? Gees... 

That box is located at a tier 2 ISP.

> How can I tell the performance of my server? I decided to send out my
> list over the weekend... I came in today, *monday* and I found that a
> LOT of email boxes had gotten repeat emails, and really pissed off my
> subscribers.

Typically this is due to a broken MTA at one of the MXes you are
delivering to which is using the wrong response code for "mailbox full"
or some similar soft error.

> And I don't mean like two or three I mean REPEAT emails, like 12,
> 13. How can I found out what caused this?

Read your MTA logs.  Carefully.

Get several copies of those messages (with full headers) from several
different people and analyse their Received: headers.

Determine from the above exactly where the problem is. and whose
responsibility it is.

Fix.

-- 
J C Lawrence                
---------(*)                Satan, oscillate my metallic sonatas. 
claw at kanga.nu               He lived as a devil, eh?		  
http://www.kanga.nu/~claw/  Evil is a name of a foeman, as I live.