How to limit number of sending email / hour on pmg ?

[InGenetic]

hi,

is there any way to limit pmg send emails /hour , ex : 500 emails / hour, to mitigate if one of email account has been compromised and send spam email to anywhere.
it's happening twice on my pmg, the last happening this morning , there's one email account has been compromised and it already sent 7,700 emails spam.

maybe if i can set limit number of email / hour that pmg can send , it's give me more time to handle this compromised account before they sending more a lot of mails.


Please advice .

Regards,

 

[markc]

I use this to at least limit the rate of delivery to 1 message per second, rather than full speed ahead. Not quite what you want but helps to mitigate hacked accounts sending spam with minimal side effects. That's a maximum of 3600 per hour total deliveries, so one every 5 seconds would be close to what you want.

default_destination_rate_delay = 1
default_destination_recipient_limit = 2

 

[bougatoyta]

Sadly a rate limiting is not implemented in PMG (I don't think it's on the roadmap)

See : https://forum.proxmox.com/threads/sender-rate-limit-to-prevent-spam.86021/

I would like to have a rate limiting in PMG this would simplify a lot the control flow of mail (everything comes out of the PMG so it seems logical to rate limit here)