>The postfix list appearently forces the HELO command to give a FQDN that >*ALSO* resolves via DNS
I think the reject in question is "reject_unknown_hostname" which requires the valid, fqdn HELO hostname to have an A record or MX record, nothing to do with a PTR record. > > [EMAIL PROTECTED] on Tue, 14 Oct 2003 00:30:18 -0400 > > The message was undeliverable because the recipient specified in > > the recipient postal address was not known at this address The MTS-ID > > of the original message is: c=us;a= ;p=southern >wireles;l=MAROWAK03101316304K1812D8 ... that is totally different, and simply a reject because the recipient was unknown at that MX. > > MSEXCH:IMS:Southern Wireless IT:SWIT:MAROWAK 3450 (000B09AA) 450 > > <marowak.s-wit.net>: Helo command rejected: Host not found yep, that's reject_unknown_hostname (nothing to do with PTR and nothing to do with unknown recipient) Len
