Correct, it is getting blocked when I have the NJABL listed inside my
/var/qmail/control/blacklists file (which blocks dynamic/residential IP
addresses).  When I don't have this RBL in the file, the mail will send out
fine.  I think this is only happening when I try sending email to another
mail server that is also using this RBL on their mail server, because it
only happens on two servers that I've discovered so far.  It doesn't happen
when sending to ALL mail servers...which is strange.

It looks like the SMTP connection is getting blocked by my own qmail server
though, as for why it only happens when trying to send to other servers that
appear to be using the same RBL list, I don't know.

-----Original Message-----
From: Alexey Loukianov [mailto:[EMAIL PROTECTED] 
Sent: Monday, November 27, 2006 12:15 AM
To: Jon M. Ernster
Subject: Re[2]: [qmailtoaster] NJABL DNSBL

Здравствуйте, Jon.

Вы писали 27 ноября 2006 г., 9:37:57:
> I send mail via outlook using my SMTP server on port 8889.

> I have a firewall rule to forward all traffic from 25 to 8889 so I can get
> around my ISP blocking port 25 (thus allowing me to use my own SMTP
server)

> The SMTP connection is immediately blocked when I attempt to send and the
> Undeliverable email comes in.

> Inside my SMTP log this is what is shown:

> 2006-11-26 16:56:47.657605500 tcpserver: status: 1/100
> 2006-11-26 16:56:47.657611500 tcpserver: pid 23714 from 68.225.200.xxx
> 2006-11-26 16:56:47.657613500 tcpserver: ok 23714
> dedi121.dumbfounded.net:63.134.253.122:25 :68.225.200.xxx::2692
> 2006-11-26 16:56:48.442750500 rblsmtpd: 68.225.200.xxx pid 23714: 451
> Dynamic/Residential IP range listed by NJABL dynablock -
> http://njabl.org/dynablock.html
> 2006-11-26 16:56:52.163508500 tcpserver: end 23714 status 0

> The 68.225.200.xxx address is the IP given to me by my cable provider.

> Here's the firewall rule I use.
> -A PREROUTING -d 63.134.253.122 -p tcp -m tcp --dport 8889 -j DNAT
> --to-destination 63.134.253.122:25

So, if I understand you correctly, you've got:
1. A laptop, connected to the Internet through cable provider.
This provider blocks any outgoing traffic on 25th port, so you have to
use port number 8889 as an outgoing SMTP port.

2. A server, located somewhere at another location, connected to the
Internet, with a firewall rule that DNATs all incoming traffic on 8889
port to the port 25 on the same IP.
This server is a qmail-based server with rblsmtp enabled, and
dynablock in a list of rblservers.

The trouble: you try to send a mail from your laptop, and get it
immediately rejected by YOUR SMTP server directly in an SMTP session.
Am I right?

-- 
С уважением,
 Alexey                          mailto:[EMAIL PROTECTED]


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