On 08/13/2015 08:04 AM, Eric Luyten wrote: > On Thu, August 13, 2015 1:53 pm, Sunny wrote: >> Hi, >> >> >> Is there an option in cyrus that can restrict who can send emails to an >> email address? >> >> e.g >> >> the mail alias everyone@xxxxxxxxxxxxx contains all the members in the >> organisation - I would like to restrict who can send emails to >> everyone@xxxxxxxxxxxxx, ideally granular control i.e. boss@xxxxxxxxxxxxx >> pa@xxxxxxxxxxxxx or if that's not possible only internal users *@mycompany.com >> (i.e. no external address is allowed to send to >> everyone@xxxxxxxxxxxxx). > > Correcting my earlier post : you could write Sieve rules for that Cyrus > mailbox that bounce/drop/file messages not carrying a From/Sender in the > local domain. > > Please note that a From/Sender line is easily forged. You could filter on the envelope from rather than the headers. The envelope could also be forged, just not as easily. -- Kenneth Murchison Principal Systems Software Engineer Carnegie Mellon University ---- Cyrus Home Page: http://www.cyrusimap.org/ List Archives/Info: http://lists.andrew.cmu.edu/pipermail/info-cyrus/ To Unsubscribe: https://lists.andrew.cmu.edu/mailman/listinfo/info-cyrus
