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Spam Filter behind firewall

Printed From: LogSat Software
Category: Spam Filter ISP
Forum Name: Spam Filter ISP Support
Forum Description: General support for Spam Filter ISP
URL: https://www.logsat.com/spamfilter/forums/forum_posts.asp?TID=5689
Printed Date: 21 November 2025 at 7:16pm


Topic: Spam Filter behind firewall
Posted By: Guests
Subject: Spam Filter behind firewall
Date Posted: 28 June 2006 at 6:02am

Hello,

I'd like to know what communication is coming out of spam filter to request opening necessary ports on firewall

Thanks

Seeb


Replies:
Posted By: Desperado
Date Posted: 28 June 2006 at 7:41am

Seeb,

If your database is on the same side of the firewall as SpamFilter, the only port required is 25 (SMTP) (both directions) and Port 80 (HTTP) for SFDB updates.  I have a remote MS-SQL server and use Port 81432 but the default SQL port is 1433.  I do not allow remote connections on 1433 to prevent "SQL Blaster" and other SQL attacks. Unless my coffee has not yet cut in, I think that will do it.



-------------
The Desperado
Dan Seligmann.
Work: http://www.mags.net
Personal: http://www.desperado.com

Posted By: Guests
Date Posted: 28 June 2006 at 9:48am

Thanks for answer Desperado,

What about connection to MAPS servers and SURBL servers?

Latast build verification should go on port 80 I think?

Posted By: LogSat
Date Posted: 28 June 2006 at 11:53am
seeb,

Incoming:
SpamFilter needs the incoming SMTP TCP port 25 open. The latest version also supports SSL over SMTP, and in this case the default port to use is 465 (if you wish to use it).
If you chose to use the administration web interface for SpamFilter, by default it uses ports TCP 80 (http) and TCP 443 (ssl). Both can be modified if needed.

Outgoing
SpamFilter needs to send out emails, so TCP port 25 should be open.
DNS queries require both TCP and UDP port 53 to be open
The SFDB filter requires TCP port 80 to be open.


-------------
Roberto Franceschetti

http://www.logsat.com" rel="nofollow - LogSat Software

http://www.logsat.com/sfi-spam-filter.asp" rel="nofollow - Spam Filter ISP

Posted By: Guests
Date Posted: 29 June 2006 at 3:09am
Thank you very much!


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