Patrick Porteous via Exim-users <exim-users@exim.org> (Mi 09 Jun 2021 21:58:24 CEST): > Hello, > > I would like to set up a filter to disable all external links in received > messages. Can someone point me to where to to start looking into that type > of filtering?
I wouldn't even think about manipulating the mail body. It is asking for endless trouble. You won't be able to do it in a perfect way, signatures will be broken, replies will contain dysfunctional links. If you want to protect your users, restrict their access to external resources (e.g. force them to use a proxy under your control). Best regards from Dresden/Germany Viele Grüße aus Dresden Heiko Schlittermann -- SCHLITTERMANN.de ---------------------------- internet & unix support - Heiko Schlittermann, Dipl.-Ing. (TU) - {fon,fax}: +49.351.802998{1,3} - gnupg encrypted messages are welcome --------------- key ID: F69376CE -
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