> > Viktor Dukhovni: > Postfix can check that the EHLO name resolves to some IP address.
Then what is the sense of doing this if the name can be whoever else's name? чт, 11 февр. 2021 г. в 00:03, Viktor Dukhovni <postfix-us...@dukhovni.org>: > On Wed, Feb 10, 2021 at 11:59:39PM +0300, Eugene Podshivalov wrote: > > > > Viktor Dukhovni: > > > The actual expectation is that the EHLO name is a valid DNS hostname, > > > and should resolve to the IP address of the client. > > > > Postfix does not seem to be able to check this right now. Wouldn't it be > > good to have such features in smtpd_helo_restrictions? > > Postfix can check that the EHLO name resolves to some IP address. There > is no check that the address is that of the connecting client, because > that is not a sufficiently useful policy criterion. > > -- > Viktor. >
