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"Seek, and ye shall find!" > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:Imail_Forum- > [EMAIL PROTECTED] On Behalf Of Sanford Whiteman > Sent: Wednesday, February 08, 2006 4:57 PM > To: John T (Lists) > Subject: Re[2]: [IMail Forum] Sortof OT: IIS SMTP gateway question > > > Yes, the question is why would I want to send HELO instead of EHLO? If the > > other server is capable of speaking ESMPT, wouldn't that be an advantage or > > no? > > You have to be careful with checking that box if you are > employing/expecting other options to be used on the connection. For > one theoretical example, if you're using TLS, that box is > automatically grayed out -- so no chance of error there. But ESMTP > pipelining is a different story. Pipelining can be very useful for a > statically-routed remote domain, since by definition all of the > messages in the queue for that receiver can be pipelined. Likewise for > ESMTP chunking and ESMTP SIZE. If any of those options is supported by > both your MX and the destination MTAs, but you turn off EHLO, you > won't be able to use them, even if both sides want to. And that's > usually bad. > > My recommendation would be to NOT check the box unless you are > absolutely sure that you can't afford the tiny bit of bandwidth used > when the remote machine replies back with its supported ESMTP options > _and_ you are also sure that you cannot, or must not, use any ESMTP > features the remote MTA. Otherwise, just leave it at EHLO. > > --Sandy > > > ------------------------------------ > Sanford Whiteman, Chief Technologist > Broadleaf Systems, a division of > Cypress Integrated Systems, Inc. > e-mail: [EMAIL PROTECTED] > > SpamAssassin plugs into Declude! > http://www.imprimia.com/products/software/freeutils/SPAMC32/download/release / > > Defuse Dictionary Attacks: Turn Exchange or IMail mailboxes into IMail Aliases! > > http://www.imprimia.com/products/software/freeutils/exchange2aliases/downloa d/rel > ease/ > > http://www.imprimia.com/products/software/freeutils/ldap2aliases/download/re lease/ > > To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html > List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/ To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
