On Wed, Aug 07, 2024 at 10:23:38AM +0300, Evgeniy Berdnikov via Exim-users wrote: > On Tue, Aug 06, 2024 at 01:16:29PM -0700, Ian Z via Exim-users wrote: > > Does non-callout sender verification of nonlocal addresses, in the case of > > a dnslookup router, determine the MX host of the sender domain? > > Please, explain how non-local address can be verified without callout. > It seems me that only thing to be "verified" in this case is syntax.
It seems the OP is asking whether it is possible to verify the *existence* of the envelope sender domain, and perhaps apply rules based on the associated MX hostname(s) (or implicit MX 0, absent MX records). I am guessing Exim can probably do this, and this is not part of "sender verification", as such, but is likely just basic access control (as in that other MTA I use). -- Viktor. -- ## subscription configuration (requires account): ## https://lists.exim.org/mailman3/postorius/lists/exim-users.lists.exim.org/ ## unsubscribe (doesn't require an account): ## exim-users-unsubscr...@lists.exim.org ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/