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Obsolete Releases => SME Server 7.x => Topic started by: Blackbox on July 30, 2007, 02:26:44 PM

Title: Strange dnsbl log in qpsmtpd/current
Post by: Blackbox on July 30, 2007, 02:26:44 PM

Hi Everyone,
This is quite new to me so please excuse me as I am a fresh newbie.

My boss uses a program (MailShield Desktop) that parses spam email and deletes them before downloading them to his outlook client.

Since three weeks ago, this program is unable to undelete messages from his trash folder. After looking around in the log files, I managed to find the following error in the qpsmtpd/current

Quote

2007-07-27 17:28:22.331924500 4524 logging::logterse plugin: ` 195.158.107.234   Unknown   mydomain.com   <his-email@mydomain.com>      dnsbl   

901   1060274404   msg denied before queued

Does anybody know what this error could mean as I cannot figure out if the DNSBL is blocking his home dynamic IP.

Thanks in advance for your help.
[/quote]

Title: Re: Strange dnsbl log in qpsmtpd/current
Post by: cactus on July 30, 2007, 03:20:10 PM

Quote from: "Blackbox"

Quote

2007-07-27 17:28:22.331924500 4524 logging::logterse plugin: ` 195.158.107.234   Unknown   mydomain.com   <his-email@mydomain.com>      dnsbl   

901   1060274404   msg denied before queued

Does anybody know what this error could mean as I cannot figure out if the DNSBL is blocking his home dynamic IP.

Am I correct in understanding that your boss is using his home dynamic IP address from outside your server domain to send mail using your server? If so the IP address from your boss has probably changed. Did you in the past add his IP to the remote access list? If so you perhaps need to update it.

Title: Strange dnsbl log in qpsmtpd/current
Post by: Blackbox on July 31, 2007, 07:27:33 AM

Hi Cactus,
Thanks for the reply.

The funny thing is that he can send mail from his outlook client from home. But when he uses MailShield (the anti-spam program), the restore mail option does not function due to this error.

I never inserted his IP address in my configs.

He always worked like a charm.

To be honest, I thought that the dynamic IP that he got assigned was being blacklisted (as I got RBL enabled).

I am out of ideas :-(

Thanks

Title: Strange dnsbl log in qpsmtpd/current
Post by: mmccarn on July 31, 2007, 02:05:34 PM

Perhaps 'Mailshield Desktop' is trying to re-deliver deleted email to your SME server when he selects "undelete', claiming to be connecting from 'mydomain.com' using SMTP.

This would produce your situation if his home IP is listed in any of your RBL servers.

You could try this by finding out his current IP, whitelisting it, letting him try to undelete something, and seeing what happens.  Or, find out if 'mailshield desktop' can be configured to use smtp authorization when 'undeleting' email.

Title: Strange dnsbl log in qpsmtpd/current
Post by: Blackbox on August 02, 2007, 09:47:47 AM

Thanks everyone for your replies.

This morning, I went on-site to troubleshoot the problem. I found out that I was getting a Mail Relaying denied from the dynamic IP he was getting.

I simply fixed it by asking my boss to connect via VPN to my network prior to loading the Mailshield application. Once he was connected via VPN, he got trusted and managed to restore his emails.

Thanks everyone for the support