SMTP connection problem

[pooyanc64]

Hello everyone.

I've installed ISPConfig in conjunction with the Ubuntu 6.10 Server Perfect Setup. I have a problem connecting to the SMTP server from home though which is a Cable connection. Last week before switching to Linux I was using Mercury Mail and had the same problem. I found out that my cable IP address was blacklisted through the popular spam databases. Using Mercury I was easly able to add my IP to the whitelist and away I went. Of course part of my problem is Im new to Linux. So my question is: Is there a white list enabled for Postfix that I can add IP addresses as needed?

Thanks
Ken

[till]

If your IP is blacklisted, you can not whitelist it by adding something to yo your mailserver, neither in Mercury nor in linux. Blacklisting is a function used in external mailservers.

To get around blacklisting problems, you will have to add a mailserver from your provider as mailrelay.

[pooyanc64]

I guess I should have been more specific. The connection that the linux box is running on is a static address not through cable or DSL. It is a part of a class C. The client (my home connection) is the blacklisted IP address. Mercury indeed does have the ability to "whitelist" addresses. Under SMTP Server - Connection Control you can override IP's found to be blacklisted through (for example) spamhaus. My issue still stands as I cannot connect to the SMTP service (POP works fine) the Firewall SMTP port is open and the ISP is not blocking the SMTP service out of its own network.

[falko]

What are the outputs of netstat -tap and iptables -L?