Querying other SMTP server for valid addresses?

Mike Bacher isp-list at TULSACONNECT.COM
Sat Nov 20 00:19:41 GMT 2004

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Steve Swaney wrote:

> A bit more sophisticated but the answer is essentially yes.

My only concern would be performance.  Yes, I know it caches (as does exim) but with the
huge amount of dictionary attacks that many of us see each day it might be a problem
performance wise.  We currently do LDAP lookups which work OK, but it has some downsides
related to domain aliases on our primary mailhost.


Mike Bacher / isp-list at tulsaconnect.com
TCIS - TulsaConnect Internet Services
Phone: 918-584-1100x110 Fax: 918-582-5776

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