Re: Last Call: <draft-klensin-smtp-521code-05.txt> (SMTP 521 and 556 Reply Codes) to Proposed Standard

["John Levine" <[e-mail]>]

>   Many Internet hosts are not in a position -- whether technically,
>   operationally, or administratively-- to offer email service.  If an
>   SMTP client (sender) attempts to open a mail connection to a system
>   that does not have an SMTP server, the connection attempt will time
>   out.

How about just making it "will be rejected or time out."

  SMTP requires that timeouts result in the client queuing the

"that timeouts" -> "that such failures"

>   message and retrying it for an extended period.  That behavior will
>   result in wasted resources and long delays in getting an error
>   message back to its originator.

It's shorter, says what needs to be said.

R's,
John