DrayTek UK Users' Community Forum

Help, Advice and Solutions from DrayTek Users

2820vn - Blocking SMTP 25 on outgoing traffic

  • unrealone1
  • Topic Author
  • Offline
  • Junior Member
  • Junior Member
More
12 Nov 2010 00:07 #64835 by unrealone1
Hi there,

I have had problems with our IP address getting blocked for spamming, possibly an infected PC on our LAN.

Can someone please provide instructions on how to block outgoing port 25 on the network 192.168.1.2-192.168.1.254

192.168.1.1 is the mailserver.

Please Log in or Create an account to join the conversation.

More
17 Nov 2010 20:36 #64898 by steveo888
Replied by steveo888 on topic block 25
Filter set 2 Rule 2
1. set a "block if no further match", leave everything blank bar:

direction =lan>wan
destination port = 25
protocol = tcp

(this will block all outgoing mail)

2. set a "pass immediately"

direction = lan>wan
source ip = your smtp server lan address
destination port = 25
protocol = tcp

worked for me!

Please Log in or Create an account to join the conversation.

Moderators: ChrisSami