Configure exim to stop sending mail to yahoo

[discovery]

Hi

What is the best method to instruct exim to reject all emails sent to yahoo domains?

I have some forums on my server and lot of users have yahoo emails, so all notifications, PM emails and others are just staying on queue beeng rejected from yahoo.

Also I want to reject all emails from yahoo if possible.

TKS.

[eth00]

Out of curiosity have you tried to fix the problem rather then just disabling the emails to them?

Have you setup domain keys + spf + rdns ?

[discovery]

yes I do and I still want to block them

so if you have a solution please help, if no let the others

[Zaf]

You may bounce or blackhole (delete) messages in the queue which have yahoo recipients, by one of the two in cron running every minute:

exiqgrep -r yahoo -i | xargs -n 1 exim -Mg

exiqgrep -r yahoo -i | xargs -n 1 exim -Mrm

You may also create a yahoo.com and park other yahoo.xxx on the server and set default email to bounce or blackhole to achieve the same.

But a slightly better solution would be to hack the Exim configuration to achieve this (not sure how, never tried it before).