[Mailman-Developers] before next release: disable backscatter indefault installation

[Kenneth Porter]

--On Monday, March 10, 2008 10:19 AM +0000 Ian Eiloart <iane at sussex.ac.uk> 
wrote:

> Yep, it would be the easiest way to integrate acceptance testing with
> Exim.  It's common for sites to put Exim installations in front of
> Exchange  servers (for security reasons), and do SMTP call forwards to
> test  deliverability.

Another approach is to dump the valid users list periodically using a 
Windows-based LDAP app and then copy that to the OSS front end MTA for 
validation. Check the MIMEDefang list archives for howto.