On Sun, 21 Sep 2003 Valdis.Kletnieks@vt.edu wrote: > On Sun, 21 Sep 2003 16:00:47 EDT, Dean Anderson <dean@av8.com> said: > > > It never sends the email in either case. In the first case, it will say no > > such host, and return an error to the user. In the second case, it will > > attempt to connect to 64.94.110.11 and will get an error, which will be > > returned to the MUA. > > So if a domain gets shelved by accident, as happened to one NANOG poster > this weekend, all their mail gets sucked up and handed a 5xx error by the > Verisign server and bounced, rather than getting hit with a 4xx and retried > for a few days. As was pointed out, some servers will give up right away. In either case, the user should get a bounce, and can follow the instructions as to whether the delivery will be retried or not. --Dean