CGP 4.2.8 Return-path validation seems broken

ïÔ: Nickolay Kondrashov <CGatePro_at_mx_ru>
äÁÔÁ: Thu 13 Jan 2005 - 10:46:57 MSK

        Hello

Yesterday i've upgraded to 4.2.8 from 4.2.5 and encountered following bug(?):

All incoming messages was rejected with the string in the logs like:

22:53:38.88 1 SMTPI-00001([192.168.0.8]) Return-Path
'bugtraq-return-17654-knu=avtomatikarus.com@securityfocus.com' rejected:
host name is unknown

After setting DNR and SMTP log level to "All info" and checking bind request logs i've found, that just before reporting string above DNR tried to resolve curious domain name '*' (without quotes). Low details log follows:

23:12:37.94 3 DNR-00020(*) MX:host name is unknown
23:12:37.94 3 DNR-00021(*) A:host name is unknown
23:12:37.94 1 SMTPI-00005([192.168.0.8]) Return-Path 

'asterisk-users-bounces@lists.digium.com' rejected: host name is unknown

And DNR "All info" log is below:

23:38:25.43 4 DNR-00001(mail.avtsev.spb.ru) A-request
23:38:25.43 4 DNR-00001(mail.avtsev.spb.ru) request sent to [127.0.0.1]
23:38:25.46 5 DNR-00001(mail.avtsev.spb.ru) got 131 bytes from 

[127.0.0.1:53]: 00 01 81 80 00 01 00 01 00 02 00 02 04 6D 61 69 6C 06 61 76 74 73 65 76 03 73 70 62 02 72 75 00 00 01 00 01 C0 0C 00 01 00 01 00 00 07 08 00 04 D4 77 BF 1A C0 11 00 02 00 01 00 00 07 08 00 10 04 64 6E 73 32 05 7A 65 6E
23:38:25.46 5 DNR-00001(mail.avtsev.spb.ru) A:OK 23:38:25.46 4 DNR-00001(mail.avtsev.spb.ru) A-response[0]: mail.avtsev.spb.ru=[212.119.191.26]

23:38:25.54 4 DNR-00002(mail.avtsev.spb.ru) A-request
23:38:25.54 5 DNR-00002(mail.avtsev.spb.ru) got 131 bytes from 
[127.0.0.1:53]: 00 02 81 80 00 01 00 01 00 02 00 02 04 6D 61 69 6C 06 61 

76 74 73 65 76 03 73 70 62 02 72 75 00 00 01 00 01 C0 0C 00 01 00 01 00 00 07 08 00 04 D4 77 BF 1A C0 11 00 02 00 01 00 00 07 08 00 10 04 64 6E 73 31 05 7A 65 6E

23:38:25.54 4 DNR-00002(mail.avtsev.spb.ru) request sent to [127.0.0.1]
23:38:25.54 5 DNR-00002(mail.avtsev.spb.ru) A:OK
23:38:25.54 4 DNR-00002(mail.avtsev.spb.ru) A-response[0]: 

mail.avtsev.spb.ru=[212.119.191.26]
23:38:25.55 4 DNR-00003(*) MX-request
23:38:25.55 5 DNR-00003(*) got 94 bytes from [127.0.0.1:53]: 00 03 81 83 00 01 00 00 00 01 00 00 01 2A 00 00 0F 00 01 00 00 06 00 01 00 00 0C 91 00 40 01 41 0C 52 4F 4F 54 2D 53 45 52 56 45 52 53 03 4E 45 54 00 05 4E 53 54 4C 44 0C 56 45 52 49 53 49 47 4E 2D 47 52 53 03 43 4F 4D 00 77 82 0A 9D 00

23:38:25.55 4 DNR-00003(*) request sent to [127.0.0.1]
23:38:25.55 3 DNR-00003(*) MX:host name is unknown
23:38:25.55 4 DNR-00004(*) A-request
23:38:25.55 5 DNR-00004(*) got 94 bytes from [127.0.0.1:53]: 00 04 81 83 

00 01 00 00 00 01 00 00 01 2A 00 00 01 00 01 00 00 06 00 01 00 00 0C 91 00 40 01 41 0C 52 4F 4F 54 2D 53 45 52 56 45 52 53 03 4E 45 54 00 05 4E 53 54 4C 44 0C 56 45 52 49 53 49 47 4E 2D 47 52 53 03 43 4F 4D 00 77 82 0A 9D 00

23:38:25.55 4 DNR-00004(*) request sent to [127.0.0.1]
23:38:25.55 3 DNR-00004(*) A:host name is unknown
23:38:25.55 1 SMTPI-00001([192.168.0.8]) Return-Path 

'root@mail.avtsev.spb.ru' rejected: host name is unknown

mail.avtsev.spb.ru - is our gateway.

For a while, I just set "Verify: HELO and Return Paths for:" in the "SMTP settings/Receiving" pane to "nobody". And it accepts messages now. I think I should note, that with the CGP 4.2.5 everything was working fine.

Thank you for your attention.

-- 

Best Regards, Nickolay Kondrashov,
the Avtomatika RUS IT-manager
+7 (812) 118-32-38
http://www.avtomatikarus.com/
mailto:knu@avtomatikarus.com

ðÏÌÕÞÅÎÏ Thu Jan 13 07:47:05 2005