[exim] Ocassional spam forwarding

> From: Mikhail Lischuk

> Sometimes spam message gets through the SpamAssassin filters, and
> gets delivered to user who has forwarding to external mailbox set up.
>
> And sometimes, some services at Gmail or some others (I did not try to
> find out which ones) report my IP

> I wonder if there are some "best
> practices" about how to deal with that.

Don't allow users to set up forwarding to external mailboxes.
Instead offer pop3, pop3s, imap and imaps.
Explain to your users that for example Gmail can pull mail from
your server: in Gmail web-interface
Settings - Accounts and Import - Check mail using POP3.