On Tue, Oct 25, 2005 at 12:43:20PM -0400, Dean Brooks wrote: > On Tue, Oct 25, 2005 at 06:33:20PM +0200, David Saez Padros wrote: > > > verify = header_sender/callout=10s/defer_ok > > > > gives the error > > > > could not verify "From:" header address > > 550 [EMAIL PROTECTED]: Remote domain not found in DNS > > > > altough webau1.hostcore.com.au does not have MX records it has > > an A record and thus should not give that error. > > If there are no MX records, how can webau1.hostcore.com.au possibly > be a valid email address? The verify header_sender specifically > checks for a valid email address, but without MX records, it is > not valid. > > This seems to be working as intended from what I can tell.
However, RFC2821, section 5: "The lookup first attempts to locate an MX record associated with the name. If a CNAME record is found instead, the resulting name is processed as if it were the initial name. If no MX records are found, but an A RR is found, the A RR is treated as if it was associated with an implicit MX RR, with a preference of 0, pointing to that host." Which seems to imply to me that A records should be searched for if MXes do not exist (that is always the was I understood that it worked). Matthew -- Matthew Newton <[EMAIL PROTECTED]> UNIX and e-mail Systems Administrator, Network Support Section, Computer Centre, University of Leicester, Leicester LE1 7RH, United Kingdom -- ## List details at http://www.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://www.exim.org/eximwiki/
