Re: [PLUG] smtp with verizon weirdness

[Jeff Abrahamson <jeff@purple.com>]

On Fri, Sep 03, 2004 at 07:25:33AM -0400, Tobias DiPasquale wrote:
>   [68 lines, 348 words, 2787 characters]  Top characters: entior_.
> 
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> On Sep 3, 2004, at 7:04 AM, Jeff Abrahamson wrote:
> >     diderot:~# exim -qf -v
> >     Single queue run
> >     LOG: 0 MAIN
> >       Start queue run: pid=32324 -qf
> >     delivering message 1C2D1Y-0002Wp-00 (queue run pid 32324 fd 5)
> >     Connecting to relay.verizon.net [206.46.170.12.25] ... connected
> >       SMTP<< 220 sc016pub.verizon.net MailPass SMTP server v1.1.1 - 
> > 121803235448JY ready Fri, 3 Sep 2004 05:59:24 -0500
> >       SMTP>> EHLO diderot.purple.com
> >       SMTP<< 250-sc016pub.verizon.net
> > 	     250-8BITMIME
> > 	     250 SIZE 8388608
> >       SMTP>> MAIL FROM:<jeff@purple.com> SIZE=2469
> >       SMTP<< 250 Sender <jeff@purple.com> OK
> >       SMTP>> RCPT TO:<xxxx@verizon.net>
> >       SMTP<< 250 Recipient <xxxx@verizon.net> Ok
> >       SMTP>> RCPT TO:<yyyy@verizon.net>
> >       SMTP<< 250 Recipient <yyyy@verizon.net> Ok
> >       SMTP>> DATA
> >       SMTP<< 354 Ok Send data ending with <CRLF>.<CRLF>
> >       SMTP>> writing message and terminating "."
> >       SMTP<< 421 sc016pub.verizon.net lost 
> > connection(mta004.verizon.net)
> >       SMTP>> QUIT
> >     LOG: 0 MAIN
> >       == xxxx@verizon.net T=remote_smtp defer (0): SMTP error from 
> > remote mailer after end of data: host relay.verizon.net 
> > [206.46.170.12]: 421 sc016pub.verizon.net lost 
> > connection(mta004.verizon.net)
> >     LOG: 0 MAIN
> >       == yyyy@verizon.net <yyyy@purple.com> T=remote_smtp defer (0): 
> > SMTP error from remote mailer after end of data: host 
> > relay.verizon.net [206.46.170.12]: 421 sc016pub.verizon.net lost 
> > connection(mta004.verizon.net)
> >     LOG: 0 MAIN
> >       End queue run: pid=32324 -qf
> >     diderot:~#
> 
> You are sending directly from your desktop. Yeah... that's bad for 
> Verizon, m'kay?
> 
> Verizon does CBV (CallBack Verification). This means that when you 
> connect to them, they will in return connect right back to you on the 
> SMTP service port. If it doesn't get a connection, your transaction 
> will be dropped. Most likely, the other verizon.net emails went through 
> your MX (ftp.ece, still, right?) and since you're trying to send this 
> through the desktop, Verizon is snapping you off in the middle. Send 
> the email through ftp and I'll bet it gets through.

Hmm, that would make sense, but other mail to verizon goes through
just fine from my desktop.  Including messages sent after the above
one that isn't going through.

My machine from which I'm sending is behind a NAT box, but the public
IP is reverse-mapped (puddle.purple.com).  I don't accept mail here
(MX is ftp.ece, as you recall), but I do send it.

-- 
 Jeff

 Jeff Abrahamson  <http://www.purple.com/jeff/>    +1 215/837-2287
 GPG fingerprint: 1A1A BA95 D082 A558 A276  63C6 16BF 8C4C 0D1D AE4B

 A cool book of games, highly worth checking out:
 http://www.amazon.com/exec/obidos/ASIN/1931686963/purple-20

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