SMTP filter

RouterOS General
1

Hi

I’m trying to filter port 25 for my natted customers, but Spamhaus keeps blocking my IPs for spam.
I’m using the following rules:
/ip firewall filter
add action=add-src-to-address-list address-list=SPAM address-list-timeout=1h
chain=forward comment=SPAM connection-limit=30,32 dst-port=25 limit=
50,5:packet log=yes log-prefix=SPAM protocol=tcp src-address=10.0.0.0/8
src-address-list=!SPAM
add action=drop chain=forward comment=SPAM dst-port=25 protocol=tcp
src-address-list=SPAM

In some cases counters stay to zero, but I keep being blocked.
I’m already trying to NAT less clients with same IP, in the case I mentioned above I’m natting 78 clients with the same IP.

What can I do?

2

Hi,

Try use “limit=10,5:packet” and see if it help.

3

Tried with 30,5 and seems working, thanks.