Quick Sendmail access question

[Peter Russell]

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But on a busy server this could kill exchange, esp during a dictionary
attack? Would this be the same as doing, manually, a truckload of LDAP
requests? Also doesnt it mean your gateway depsnd on exchange being up
and available to recieve mail?

ISnt it betterer to build an list of va,lid recipients and use this as a
recipient or access list on your MTA - if in list accept connection, if
not in list reject connection?

Cos we have Exchange 2k3 (yes we love email downtime)- if your way is
better? then we can look at this as well :)





Julian Field wrote:
> Once you have done the Exchange change, you need to install
> "milter-ahead" into sendmail, which is pretty easy. Start at
> http://www.milter.info/milter-ahead/index.shtml
>
> This will make your sendmail setup check that each recipient is valid on
> your Exchange server before accepting the incoming message at all. It
> uses all sorts of clever caching techniques to make this a remarkably
> low-load test. It works *very* well indeed.
>
> David C.M. Weber wrote:
>
>> I am actually using exchange 2k3.
>>
>> I was looking for something a bit more generic for all exchange users to
>> use.  A HTTP/HTTPS option is especially attractive because my
>> Mailscanner box is also acting as an OWA proxy, so this service is
>> already available.
>>
>> This solution is actually using an ASP script on the Exchange box to
>> gather the addresses, so it eliminates some issues that I had w/ the
>> Putty file push in the MAQ.
>>
>> Be more than happy to hear any alternatives though.
>>
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>
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