Re: [exim] Blocking a host that is allowed.

> You could try to put a ! in there, like this:
>
> !192.0.2.1 : 192.0.2.0/24
>
> This should allow any host s in that /24 except 192.0.2.1 to submit
> mail.
>
> You should have a look at README.Debian to check if this is really
> supported, though.
>

Well, it appears to be syntactically correct and the update-exim4.conf man
page makes no mention of this (nor does it make any mention of any syntax
for dc_relay_nets), but so far Exim is still running and accepting
connections from everyone else. :)

I'll report back later with more results for completeness.