Mailing List CGatePro@mail.stalker.com Message #98159
From: Bleek Thomas <bl@gfz-potsdam.de>
Subject: Re: Bad SMTP prompt at the host, smtp closing connection during sending
Date: Wed, 24 Jun 2009 17:51:47 +0200
To: CommuniGate Pro Discussions <CGatePro@mail.stalker.com>
X-Mailer: Apple Mail (2.935.3)
I just sent a message without problems. I wonder, why you see only ****** as inp: from the smtp-server?

Here what I see:

telnet mx1.xs4all.nl 25
Trying 194.109.24.132...
Connected to mx1.xs4all.nl.
Escape character is '^]'.
220-mxdrop127.xs4all.nl ESMTP Sendmail 8.13.8/8.13.8; Wed, 24 Jun 2009 17:29:54 +0200 (CEST) NO UBE
220-This SMTP server is operated by XS4ALL Internet BV,
220-   Diemen, The Netherlands. XS4ALL Internet BV prohibits
220-   the use of this or any other XS4ALL systems or services
220-   for the transmission of Unsolicited Bulk E-mail (UBE).
220-  Questions about delivery-problems should be directed to
220    the appropriate RFC 2142 mailbox addresses.
helo o
250 mxdrop127.xs4all.nl Hello cgp1.gfz-potsdam.de [139.17.3.101], pleased to meet you
quit
221 2.0.0 mxdrop127.xs4all.nl closing connection

you should try the same at your machine. perhaps some firewall/NAT-device is doing something ill.
the smtp prompt is long anyway, but our CGP (5.2.8) has sent the message.

good look,
thomas
Am 24.06.2009 um 16:15 schrieb sjakie:

We have problems sending emails to some providers (among them xs4all.nl). It looks like CommunigatePro is closing connection while handshaking. We are not blacklisted. It looks like our ptr's are ok. Looked over a lot of the AUTH settings. Unfortunately, no solution yet. Multihoming could be an issue, however, untill 3 weeks earlier it all seemed ok with same settings and multihoming.

This is the bounce message:

Reporting-MTA: dns; researchsoftware.nl

Original-Recipient: rfc822;<sjaak@xs4all.nl>
Final-Recipient: rfc822;<sjaak@xs4all.nl>
Action: failed
Status: 4.0.0

Failed to deliver to 'sjaak@xs4all.nl'
SMTP module(domain @192.168.20.154:xs4all.nl) reports:
 mx2.xs4all.nl: Bad SMTP prompt at the host

 


We have a firewall/router and 192.168.20.154 is our mail server IP (natted, WAN IP is 87.249.111.154). I have listed here two log sections from our mail server:


21:45:02.661 5 SMTP waiting: @192.168.20.154:somedomain.com @192.168.20.154:home.nl xs4all.nl active: @192.168.20.154:jer.demon.nl 
21:45:02.661 5 SMTP(@192.168.20.154:somedomain.com) is first in queue with 398 second(s) delay
21:45:02.661 4 SMTP sending to @192.168.20.154:jer.demon.nl
21:45:02.661 5 SMTP new VStream created, n=1
21:45:02.661 5 SMTP waiting(get): @192.168.20.154:somedomain.com @192.168.20.154:home.nl xs4all.nl active: @192.168.20.154:jer.demon.nl 
21:45:02.661 5 SMTP(@192.168.20.154:somedomain.com) is first in queue with 398 second(s) delay
21:45:02.661 5 SMTP stream thread started
21:45:02.661 5 SMTP-001643() started
21:45:02.661 5 SMTP-001643(jer.demon.nl) processing
21:45:02.661 5 DNR-019762(jer.demon.nl) MX-request
21:45:02.661 4 DNR-019762(jer.demon.nl) MX-request -> udp:[192.168.20.10]:53
21:45:02.677 5 DNR-019762(jer.demon.nl) got 152 bytes from [192.168.20.10]:53: 4D 32 81 80 00 01 00 04 00 02 00 00 03 6A 65 72 05 64 65 6D 6F 6E 02 6E 6C 00 00 0F 00 01 C0 0C 00 0F 00 01 00 00 0E 10 00 0F 00 64 03 6D 78 31 06 78 73 34 61 6C 6C C0 16 C0 0C 00 0F 00 01 00 00 0E 10 00 08 00 64 03 6D
21:45:02.677 5 DNR-019762(jer.demon.nl) MX:OK
21:45:02.677 4 DNR-019762(jer.demon.nl) MX[0]: jer.demon.nl(pty 100) = mx1.xs4all.nl
21:45:02.677 4 DNR-019762(jer.demon.nl) MX[1]: jer.demon.nl(pty 100) = mx2.xs4all.nl
21:45:02.677 4 DNR-019762(jer.demon.nl) MX[2]: jer.demon.nl(pty 100) = mx3.xs4all.nl
21:45:02.677 4 DNR-019762(jer.demon.nl) MX[3]: jer.demon.nl(pty 100) = mx4.xs4all.nl
21:45:02.677 5 SMTP-001643(jer.demon.nl) 4 relay(s) found:mx1.xs4all.nl mx2.xs4all.nl mx3.xs4all.nl
21:45:02.677 4 SMTP-001643(jer.demon.nl) resolving 'mx1.xs4all.nl'
21:45:02.677 5 DNR-019763(mx1.xs4all.nl) A-request
21:45:02.677 4 DNR-019763(mx1.xs4all.nl) A-request -> udp:[192.168.20.10]:53
21:45:02.677 5 DNR-019763(mx1.xs4all.nl) got 47 bytes from [192.168.20.10]:53: 4D 33 81 80 00 01 00 01 00 00 00 00 03 6D 78 31 06 78 73 34 61 6C 6C 02 6E 6C 00 00 01 00 01 C0 0C 00 01 00 01 00 00 11 E8 00 04 C2 6D 18 84
21:45:02.677 5 DNR-019763(mx1.xs4all.nl) A:OK
21:45:02.677 4 DNR-019763(mx1.xs4all.nl) A[0]: mx1.xs4all.nl=[194.109.24.132]
21:45:02.677 4 SMTP-001643(jer.demon.nl) connecting to [194.109.24.132]:25
21:45:04.208 5 SMTP-001643(jer.demon.nl) inp: 220-***********************************************************************************************
21:45:04.208 5 SMTP-001643(jer.demon.nl) inp: *******************************************************
21:45:04.208 3 SMTP-001643(jer.demon.nl) Expected '220 ...' at [194.109.24.132]:25, got:*******************************************************
21:45:04.208 5 SMTP-001643(jer.demon.nl) out: QUIT\r\n
21:45:04.208 5 SMTP-001643(jer.demon.nl) inp: ************************************************************
21:45:04.208 4 SMTP-001643(jer.demon.nl) closing connection
21:45:04.208 4 SMTP-001643(jer.demon.nl) resolving 'mx2.xs4all.nl'
21:45:04.208 5 DNR-019764(mx2.xs4all.nl) A-request
21:45:04.208 4 DNR-019764(mx2.xs4all.nl) A-request -> udp:[192.168.20.10]:53
21:45:04.208 5 DNR-019764(mx2.xs4all.nl) got 47 bytes from [192.168.20.10]:53: 4D 34 81 80 00 01 00 01 00 00 00 00 03 6D 78 32 06 78 73 34 61 6C 6C 02 6E 6C 00 00 01 00 01 C0 0C 00 01 00 01 00 00 11 E6 00 04 C2 6D 18 8A
21:45:04.208 5 DNR-019764(mx2.xs4all.nl) A:OK
21:45:04.208 4 DNR-019764(mx2.xs4all.nl) A[0]: mx2.xs4all.nl=[194.109.24.138]
21:45:04.208 4 SMTP-001643(jer.demon.nl) connecting to [194.109.24.138]:25
21:45:05.740 5 SMTP-001643(jer.demon.nl) inp: 220-***********************************************************************************************
21:45:05.740 5 SMTP-001643(jer.demon.nl) inp: *******************************************************
21:45:05.740 3 SMTP-001643(jer.demon.nl) Expected '220 ...' at [194.109.24.138]:25, got:*******************************************************
21:45:05.740 5 SMTP-001643(jer.demon.nl) out: QUIT\r\n
21:45:05.740 5 SMTP-001643(jer.demon.nl) inp: ************************************************************
21:45:05.740 4 SMTP-001643(jer.demon.nl) closing connection
21:45:05.740 4 SMTP-001643(jer.demon.nl) resolving 'mx3.xs4all.nl'
21:45:05.740 5 DNR-019765(mx3.xs4all.nl) A-request
21:45:05.740 4 DNR-019765(mx3.xs4all.nl) A-request -> udp:[192.168.20.10]:53
21:45:05.740 5 DNR-019765(mx3.xs4all.nl) got 47 bytes from [192.168.20.10]:53: 4D 35 81 80 00 01 00 01 00 00 00 00 03 6D 78 33 06 78 73 34 61 6C 6C 02 6E 6C 00 00 01 00 01 C0 0C 00 01 00 01 00 00 11 E5 00 04 C2 6D 18 86
21:45:05.740 5 DNR-019765(mx3.xs4all.nl) A:OK


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