> 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/download/release/ http://www.imprimia.com/products/software/freeutils/ldap2aliases/download/release/ 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/
