On Thursday, October 30, 2014, 11:33:43 PM, Biju wrote:
> Hi All,
>
> I am trying to ratelimit outgoing messages in my exim4 daemon. Many a times,
> our mail server has been hacked, multiple identity has been added and using
> those ids, hackers send out bulk spam mails. Once the limit is overcome,
> many domains are blacklisting us. As I understand from the manuals and
> searching the mailing lists, outgoing mails can not be ratelimited. Please
> correct me if I am wrong.
>
> What I am thinking is to rate limit using IP tables number of messages going
> out domain wise to some limit. I can only reject connections using IP
> tables. What I need is to defer the rejected connections. Where in the exim4
> do I do this? Is it in routers?
>
> I am sure many of you may have faced such issues. Please help with
> appropriate pointers.
Doing a quick Google search (search terms: 'exim rate limit') turns up
a post to github from Lena on 'Blocking compromised accounts
(outgoing spam) and auth cracking'.
https://github.com/Exim/exim/wiki/BlockCracking
Perhaps you can use this or tailor it to your needs in accomplishing
your task.
--
Duane Hill
duihi77@???
"If at first you don't succeed, so much for sky diving."
