On Fri, Feb 17, 2012 at 06:35:11PM +0100, Reindl Harald wrote: > Am 17.02.2012 18:31, schrieb Simon Hintermann: > > SENDER (a...@toto.com) sends an email to b...@domain.com > > || > > v > > WEBSERVER (b...@domain.com forwards all mails to b...@yahoo.com) > > || > > v > > MAIL GATEWAY (local domains: domain.com) sees a mail with a "From: > > a...@toto.com" header and says that this is an > > unwanted mail > > || > > v > > warning and pass to yahoo.com or simply drop... > > why does WEBSERVER does forward anything? > forwarders have to be configured on the MTA/MDA and > then your problems does not exist at all
I am in a similar situation, and would like to bar people from using the sendmail binary. Having said that, I guess that Simon thinks of the case that the user is using some webmail package, which could very well inject an email with a sender @toto.com into the mail system. Eg. my mutt is configured to set the envelope sender from the 'From:' line, too, and a web application is equivalent to shell access, in his case. Kind regards, --Toni++
