On Sun, 21 Feb 2010, Jonathan Tripathy wrote: > On 21/02/2010 19:05, Wietse Venema wrote: > >Jonathan Tripathy: > >>Hi Folks, > >> > >>To prevent spammers sending email from spoofed addressed that appear > >>from my domain, I currently use SPF. I'm having second thoughts about > >>using SPF, so is there any other way to make sure that only > >>authenticated users can send email from my domain? > >Receivers may "verify" the message origin with SPF, DKIM, S/Mime, > >or other information that you make available to those receivers. > > > >But nothing requires that receivers do those things. > > > > Wietse > > Sorry I forgot to state that im only concerned with MY server here. > For example, I don't want someone to telnet to MY postfix server, > and give m...@mydomain.com for both sender and receiver
Use a policy service like postfwd or get creative with access tables. Search google and this list's archives for some variant of 'sender equal to recipient'. -- Sahil Tandon <sa...@tandon.net>
