Krzysztof Adamski wrote:
On Fri, 10 Dec 2004, Jeffrey I. Schiller wrote:
On Fri, Dec 10, 2004 at 12:26:59PM -0500, Rich Kulawiec wrote:
One thing that's not clear is whether or not Verizon caches any of this information.
It appears that they do some amount of caching.
-Jeff
It does not appear that they are caching it, here is a sample from my log file:
Dec 6 19:18:15 white sm-mta[25976]: iB70IF6n025976: <[EMAIL PROTECTED]>... User unknown Dec 6 19:18:15 white sm-mta[25977]: iB70IF6n025977: <[EMAIL PROTECTED]>... User unknown Dec 6 19:18:16 white sm-mta[25976]: iB70IF6n025976: from=<>, size=0, class=0, nrcpts=0, proto=SMTP, daemon=MTA, relay=sc006pub.verizon.net [206.46.170.182] Dec 6 19:18:16 white sm-mta[25977]: iB70IF6n025977: from=<>, size=0, class=0, nrcpts=0, proto=SMTP, daemon=MTA, relay=sc019pub.verizon.net [206.46.170.68] Dec 6 19:18:16 white sm-mta[25976]: iB70IF6o025976: <[EMAIL PROTECTED]>... User unknown Dec 6 19:18:16 white sm-mta[25977]: iB70IF6o025977: <[EMAIL PROTECTED]>... User unknown Dec 6 19:18:16 white sm-mta[25976]: iB70IF6o025976: lost input channel from sc006pub.verizon.net [206.46.170.182] to MTA after rcpt Dec 6 19:18:16 white sm-mta[25976]: iB70IF6o025976: from=<[EMAIL PROTECTED]>, size=0, class=0, nrcpts=0, proto=SMTP, daemon=MTA, relay=sc006pub.verizon.net [206.46.170.182] Dec 6 19:18:16 white sm-mta[25977]: iB70IF6o025977: lost input channel from sc019pub.verizon.net [206.46.170.68] to MTA after rcpt Dec 6 19:18:16 white sm-mta[25977]: iB70IF6o025977: from=<[EMAIL PROTECTED]>, size=0, class=0, nrcpts=0, proto=SMTP, daemon=MTA, relay=sc019pub.verizon.net [206.46.170.68]
What happens when verizon tries to send email to somebody who does the same type of check, does this not create an infinite loop?
Not if Verizon treats the antispam[0-9]+ mailboxes in a special manner and answers without a check. And they have to answer that the box exists or things are gonna _really_ break.
Doing a quick test using the last antispam[0-9]+ address in my SMTP logs, I got all 250 responses without a more recent call back. -- Crist J. Clark [EMAIL PROTECTED] Globalstar Communications (408) 933-4387
