[ILUG] Eircom email screwed up?

[Nick Murtagh]

Robert Sweetnam wrote:
> Below are the headers of a delivery failure that I received  a couple of
> weeks back, it appears that when replying to all from the list,
> intactsoftwares mail server seems to think that it is responsible for
> all @eircom.net addresses.

Haha haven't seen one of these in a while. Usually it means the
following:

A site is using Exchange.

Exchange fetches all mail for a domain from a single POP account.

Exchange attempts to work out who to send the messages to by parsing the
To and Cc lines. I'm not kidding.

The admin has mis-configured Exchange to assume responsibility for
delivering to all addresses it finds, instead of just local ones.

Result - bounces and/or multiple deliveries.

-- 
Nick Murtagh <nickm at go2.ie>
go2web Ltd., Harbour House, Harbour Road, Howth, Dublin 13
http://www.go2.ie/ - Phone +353-(0)1-839-5432 - Fax +353-(0)1-839-5439
Registered in Ireland: No. 327376
Registered address: 53 Thormanby Lawns, Howth, Dublin 13