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Andosahi
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Block outgoing port 25

Wed Jan 15, 2020 11:04 pm

Hi, i am new in mikrotik, where i can block smtp ports ? I want to avoid that any machine except server can send emails. i did this but didnt work, it blocks server too.

Image

Thank you
 
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macsrwe
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Re: Block outgoing port 25

Thu Jan 16, 2020 10:14 am

You have four rules that accept ports, followed by four rules that drop ports, which will never be executed because they have already been accepted.

Get rid of the accept rules, and to each of the drop rules you have, add the term:

dst-address=!ADDR

where ADDR is the IP address of your permitted server.
 
mkx
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Re: Block outgoing port 25

Thu Jan 16, 2020 10:24 am

Screenshot doesn't show rules with their whole definition. Please post textual export (run /ip firewall export in terminal window and post the output).
BR,
Metod

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