[Feature] More limits for emailaccount to prevent spam

[jderoij]

Describe the feature or change in detail

I think is is nice to set more limits for emailaccounts to prevent SPAM. Now you can only set an hour limit. But for some accounts I would also like to set a daily limit and a recipient limit.

For exim4 you can do that with this line (I think):

recipients_max = 10
recipients_max_reject = true

and something like this to get two limits on sending mail:

acl_not_smtp:
deny message = Web site of $authenticated_id user is sending too much emails - rate overlimit = $sender_rate / $sender_rate_period
ratelimit = 20 / 1h / $authenticated_id

deny message = Web site of $authenticated_id user is sending too much emails - rate overlimit = $sender_rate / $sender_rate_period
ratelimit = 200 / 1d / $authenticated_id

I can help you with the PHP code for this feature, but my knowledge of Linux and Exim is limited

Would you like to sponsor this feature to have it implemented?

No

[jaapmarcus]

There is allready a limit of 200 mails an hour for email send via php / send mail

It should be easy to change that value to a lot less if needed / wanted

Changes in existing Exim config is a disaster...

[Aartsie]

I think when there is an section in the docs where this is explained and the instructions how to change this, it will be good for the most of us.

Because I think the amount of emails that the server may send is also dependent on the usage of the server.
You can already change the Exim config under server settings `/edit/server/exim4/'

[AysadKozanoglu]

@jaapmarcus your choice and solution is the correct right way. thank you