On 22/12/11 09:58, Jeroen Geilman wrote: > In postfix' case, "address verification" does not mean "use the SMTP > VRFY command". > It means "send a specially-crafted, actual email message and record > whether the recipient is accepted or not." > > It is documented in detail here: > http://www.postfix.org/ADDRESS_VERIFICATION_README.html > > This will fail if, as previously mentioned, your MTA rejects a recipient > address that was previously allowed to send mail.
Only if you reject the email at the RCPT TO stage. See rob0's post for a way to avoid this. Peter