John Hasler put forth on 11/25/2009 5:55 PM: > TonyN writes: >> ...you should just rely on normal SMTP retries. > > Which many servers no longer do correctly. Standard retry timeout for most MTAs is 5 days. What exactly do you mean by the statement above? All "real" MTAs (not necessarily M$ Exchange) handle this correctly, whether Postfix, Sendmail, Exim, probably even Qmail. Which MTAs do you claim do not handle this correctly? -- Stan