dr john halewood wrote:
> The only other thing I can
> think of is rejecting email to non-existant users before defang does
> most of it's tests, but that would involve rigging up a system to
> verify each user against the Exchange system that the mail routes
> through to. Any suggestions/clues to what I'm missing very welcome.
You should be doing this anyway. All mail servers have a growing onus on them to SMTP
reject incoming emails at the organization boundary wherever possible.
There are various methods depending on the version of Exchange you use. A cron job to
run an LDAP query and generate a sendmail "access" file is commonly used. Search the
list archives for details.
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