[Exim] Stopping loops

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Author: Paul Walsh
Date:  
To: Exim Users
Subject: [Exim] Stopping loops
Here's what's happening:

Local user X.YZ@??? has a Hotmail address X_YZ@???
Within MS Outlook on their PC the user sets up Out of Office Assistant to
forward all mail to X.YZ@??? (note they've got the address wrong).
Mail to X.YZ@??? gets redirected by Outlook to X.YZ@???.
Hotmail rejects the message because of a non-existant address and sends it
back to X.YZ@??? which gets redirected to hotmail ad infinitum

Question is: What can be done within Exim to either a) stop this happening
or b) queue messages for, say, hotmail.com and only process them every few
hours?

Paul Walsh

Senior Systems Programmer, Information Services,
University of Central England, BIRMINGHAM B42 2SU, UK
Tel: +44 (0)121 331 5708    Fax: +44 (0)121 356 2875