* on the Mon, Oct 13, 2014 at 08:48:56AM -0400, Wietse Venema wrote: >> server and sending "RCPT TO". I'm not talking about that, I'm talking >> about asking Postfix if the syntax of the address is valid and if the >> DNS is set up suitably to be able to potentially be able to deliver >> the message. I.e, are there valid MX records etc. That is how Exim >> does it at least. > > That's not what Sendmail does, as far as I recall. You know, the > program whose name appears in "sendmail -bv".
I wasn't using Exim as an example of the right way to do things, so there's not much point in using Sendmails behaviour as a counter example. I was just demonstrating that there is more than one way to "verify" an address and it doesn't necessarily have to involve callouts and all of the problems that entails. > There hasn't been demand for what you ask in the 17 years that > people have used Postfix. It could be implemented with another > postqueue command option that connects to the verify daemon, perhaps > with a flag that says don't talk to remote servers. This runs an > email address through Postfix's "routers" and agents that know how > to deliver mail. If the mail queue is not congested then this > produces a result in seconds. That feature sounds like it would be useful to me, but I understand that lack of demand would make it a low priority feature request. -- Mike Cardwell https://grepular.com https://emailprivacytester.com OpenPGP Key 35BC AF1D 3AA2 1F84 3DC3 B0CF 70A5 F512 0018 461F XMPP OTR Key 8924 B06A 7917 AAF3 DBB1 BF1B 295C 3C78 3EF1 46B4
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