I must be one of the 1% - i use peering behind my IMgate to reduce traffic over my WAN (most of my email is internal and does not venture out into the big bad world). As i have Imgate and my NAV box doing all the talking to the internet the X1 response has never been an issue. the only thing i miss with the peering is that i have lost the nobody account.
Les. ----- Original Message ----- From: "Sanford Whiteman" <[EMAIL PROTECTED]> To: "Len Conrad" <[EMAIL PROTECTED]> Sent: Thursday, March 14, 2002 6:34 AM Subject: Re[4]: Peering and the X1 text (WAS: RE: [IMail Forum] Enough of this "X1" crap) > > shared memory? > > As in: the GUI and the SMTP share a memory heap allocated to peering > information, so the flow between the management interface and the > daemon is instantaneous. All that DNS would offer is a way of changing > peering setups without the Imail GUI--not such a common occurence and > not worth the traffic. > > > I bet 99% of Imail peer users have their all Imail peer servers > > directly onto internet as MX hosts. > > Since we really can't debate statistics, maybe someone will pipe up. > > > why? tcp connect to a peer, start smtp session, then either > > > > VRFY user > > > > or > > > > RCPT TO: user > > > > ... how is VRFY so much better? > > Because it's really: > > VRFY user > > (response) > > vs. > > EHLO > > (response) > > MAIL FROM: > > (response) > > RCPT TO: > > (response) > > The only time that RCPT TO: is faster is if you only have two servers: > since the first peer attempt is always the only possible hit, so you > can afford to have the whole conversation at once without a pre-flight > check. With more and more servers, you're wasting mucho bandwidth by > having three-part convos just to get rejected. (Yes, HELO/EHLO is > optional, which would save you one part, but it's gonna look messy in > your logs to have last-hops with no hostname.) > > Sandy > > > Please visit http://www.ipswitch.com/support/mailing-lists.html > to be removed from this list. > > An Archive of this list is available at: > http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ > > Please visit the Knowledge Base for answers to frequently asked > questions: http://www.ipswitch.com/support/IMail/ > Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Please visit the Knowledge Base for answers to frequently asked questions: http://www.ipswitch.com/support/IMail/
