Please check my exim logs, can't receive mails

[huggyshaggles]

Hi,
I can't receive mails from certain senders.

I got an error reply for one of my emails of domains hosted somewhere else
-------------
Your message did not reach some or all of the intended recipients.

Subject: wefefwfew
Sent: 14.12.2006 16:39

The following recipient(s) could not be reached:

'bla@customsnkr.com' on 14.12.2006 16:39
550 unknown user
-----------------------------------

In the exim_mainlogs i get this when a mail doesnt get through:
----------------------
2006-12-14 04:35:18 SMTP connection from [69.16.234.123]:40178 I=[72.52.130.137]:25 (TCP/IP connection count = 1)
2006-12-14 04:35:18 SMTP connection from (nagios5.liquidweb.com) [69.16.234.123]:40178 I=[72.52.130.137]:25 closed by QUIT
---------------------

and this when it comes through
---------------------
2006-12-14 04:44:22 SMTP connection from [212.227.126.188]:57548 I=[72.52.130.137]:25 (TCP/IP connection count = 1)
2006-12-14 04:44:24 ident connection to 212.227.126.188 timed out
2006-12-14 04:44:27 1Gun8d-0003R9-JO <= nix@ideatemple.de H=(moutng.kundenserver.de) [212.227.126.188]:57548 I=[72.52.130.137]:25 P=esmtp S=2677 id=002801c71f64$732e6700$0a01a8c0@Burt T="efwfewefw" from <nix@ideatemple.de> for bla@customsnkr.com
2006-12-14 04:44:27 cwd=/var/spool/exim 3 args: /usr/sbin/exim -Mc 1Gun8d-0003R9-JO
2006-12-14 04:44:28 1Gun8d-0003R9-JO => bla <bla@customsnkr.com> F=<nix@ideatemple.de> P=<nix@ideatemple.de> R=virtual_user T=virtual_userdelivery S=2841 QT=1s DT=0s
2006-12-14 04:44:28 1Gun8d-0003R9-JO Completed QT=1s
2006-12-14 04:44:28 SMTP connection from (moutng.kundenserver.de) [212.227.126.188]:57548 I=[72.52.130.137]:25 closed by QUIT

[mswebguru]

Hi,
I can't receive mails from certain senders.

I got an error reply for one of my emails of domains hosted somewhere else
-------------
Your message did not reach some or all of the intended recipients.

Subject: wefefwfew
Sent: 14.12.2006 16:39

The following recipient(s) could not be reached:

'bla@customsnkr.com' on 14.12.2006 16:39
550 unknown user
-----------------------------------

In the exim_mainlogs i get this when a mail doesnt get through:
----------------------
2006-12-14 04:35:18 SMTP connection from [69.16.234.123]:40178 I=[72.52.130.137]:25 (TCP/IP connection count = 1)
2006-12-14 04:35:18 SMTP connection from (nagios5.liquidweb.com) [69.16.234.123]:40178 I=[72.52.130.137]:25 closed by QUIT
---------------------

and this when it comes through
---------------------
2006-12-14 04:44:22 SMTP connection from [212.227.126.188]:57548 I=[72.52.130.137]:25 (TCP/IP connection count = 1)
2006-12-14 04:44:24 ident connection to 212.227.126.188 timed out
2006-12-14 04:44:27 1Gun8d-0003R9-JO <= nix@ideatemple.de H=(moutng.kundenserver.de) [212.227.126.188]:57548 I=[72.52.130.137]:25 P=esmtp S=2677 id=002801c71f64$732e6700$0a01a8c0@Burt T="efwfewefw" from <nix@ideatemple.de> for bla@customsnkr.com
2006-12-14 04:44:27 cwd=/var/spool/exim 3 args: /usr/sbin/exim -Mc 1Gun8d-0003R9-JO
2006-12-14 04:44:28 1Gun8d-0003R9-JO => bla <bla@customsnkr.com> F=<nix@ideatemple.de> P=<nix@ideatemple.de> R=virtual_user T=virtual_userdelivery S=2841 QT=1s DT=0s
2006-12-14 04:44:28 1Gun8d-0003R9-JO Completed QT=1s
2006-12-14 04:44:28 SMTP connection from (moutng.kundenserver.de) [212.227.126.188]:57548 I=[72.52.130.137]:25 closed by QUIT

Hi,

Probably the recipients has no Reverse DNS entries for MX records that is why your getting 550 unknown user.

you should have a reverse DNS for all your mail servers. It is strongly urged that you have them, as many mailservers will not accept mail from mailservers with no reverse DNS entry.