Sender rate limit, x mails/hour

[jmjosebest]

Hello, I use PMG as a relay/smarthost to filter emails sent from my network. PMG takes care of scanning these mails and if there is no spam or virus they are sent to the recipients.

The problem I have is that I don't have a total capacity to limit the number of mails per hour that a sender or domain can send.

However, in my PMG relay no one else has access and this is where I have the real control of the amount of emails being sent.

My question is, how can I limit the amount of emails/hour that the same sender or domain can send?

Thank you very much!

 

[hata_ph]

use postfix or addin like postfwd

https://wiki.deimos.fr/Postfix:_limit_outgoing_mail_throttling.html
https://github.com/postfwd/postfwd

 

[jmjosebest]

Hi, thanks, I have been reading:

https://postfwd.org/ratelimits.html
https://wiki.deimos.fr/Postfix:_limit_outgoing_mail_throttling.html

but apparently it is only possible to do rate-limit based on the recipient, not the sender.
Perhaps I misunderstood the documentation?

What I am looking for is to be able to limit the amount of mails that the relay can accept (PMG) for a single sender.

This way I can avoid that they use my relay to send mass mailing.

Thank you!

 

[hata_ph]

To postfix rate limit incoming connection...

https://e-rave.nl/rate-limit-incoming-mail-on-postfix

For postfwd

http://postfwd.org/ratelimits.html

 

[William Edwards]

You want postfwd.

 

[peganet]

I'm following the thread.

 

[darhac81]

To postfix rate limit incoming connection...

https://e-rave.nl/rate-limit-incoming-mail-on-postfix

For postfwd

http://postfwd.org/ratelimits.html

https://e-rave.nl/rate-limit-incoming-mail-on-postfix
this link is no longer available

 

[ArchanfelHUN]

This is my config with postfwd (/etc/postfix/postfwd.cf)
Rule1: 100 email/hour (from one address) except one IP (mailing list server)
Rule2: 200 email/hour (recipient based)
Rule3: if the from and to address are the same reject the email

id=RULE-01 client_address=!!(10.174.0.7/32) action=rate(sender/100/3600/421 4.7.1 - Sorry, exceeded 100 messages in 60 minutes.) # 200 email/óra max címzettenként id=RULE-02 action=rate(recipient/200/3600/421 4.7.1 - Sorry, exceeded 200 messages in 60 minutes.) # Ha a feladó ugyanaz mint a címzett eldobjuk id=RULE-03 sender==$$recipient action=REJECT not allowed