On Wed, Aug 01, 2012 at 07:50:36PM -0700, Rick Moen wrote:
Quoting Craig Sanders (cas@taz.net.au):
actually, no. it would not Be Extremely Dumb. Having multiple PTR records for an IP address is a valid and occasionally useful DNS configuration.
Please do describe examples for an MTA host.
please do it yourself. I really have no interest in getting into yet another round of you insisting that you can never be wrong. you're human. even you can occasionally be wrong. sad, but true. learn to deal with this unfortunate fact with some grace and dignity.
-- and, more to the immediate point, would completely and automatically bollix any aim to resolve to any specific hostname to make some hypothetical MTA happy.
it's *entirely* the MTA's fault if it freaks out over perfectly valid DNS configuration.
Funny thing about system administration. When the object is to deliver mail, saying some problem is a remote MTA's 'fault' doesn't actually induce delivery.
funny thing about broken MTAs - they don't induce delivery either.
configuring an MTA to require matching rDNS resolution is Extremely Dumb in most situations
Agreed. But not relevant.
entirely relevant. broken is broken. expecting the rest of the world to adapt to intransigent broken-ness is completely unreasonable. craig -- craig sanders <cas@taz.net.au>