I'm hosting my dad's webpage which has a contact form (which should be improved to avoid spam and/or bots) and from time to time someone types multiple email addresses in the from field of the form so contact emails with multiple from addresses like "from: h...@example.com, f...@example.net" are generated. I though that those kind of messages should get rejected and thought that maybe there was a builtin restriction for this use case.
On Tue, Oct 6, 2020 at 10:12 PM Noel Jones <njo...@megan.vbhcs.org> wrote: > > > On 10/6/2020 6:52 PM, Pau Peris wrote: > > Hi, > > > > is there a sender restriction to reject a message with multiple from > > addresses? Which would be? > > > > Thanks, > > > > > > If you're seeing multiple addresses in a single From: header you may > be able to carefully craft a header_checks to detect them, but > detecting multiple From: headers (more than one From: header) > requires a milter or content_filter. > > > -- Noel Jones -- Pau Peris Rodriguez Chief Executive Officer (CEO) Tel: 669650292 C/Balmes 211, Principal Segunda Barcelona 08006 http://www.webeloping.es Aquest correu electrònic conté informació de caràcter confidencial dirigida exclusivament al seu/s destinatari/s en còpia present. Tant mateix, queda prohibida la seva divulgació, copia o distribució a tercers sense prèvia autorització escrita per part de Pau Peris Rodriguez. En cas d'haver rebut aquesta informació per error, es demana que es notifiqui immediatament d'aquesta circumstancia mitjançant la direcció electrònica del emissor.