On Wed, Jun 24, 2015 at 10:10:28PM -0400, sashk wrote:
> Wietse,
>
> Show actual evidence: two complete logfile records that are too
> close
> together.
>
> My original email showed those two records. Aren't they what you're
> asking for?
It did not show back-to-back delivery of two separate messages.
Rather it showed a single message that tried two MX hosts in
succession, because the first MX host returned a 4XX response.
The reported error was an excess arrival rate of mail into a single
user's mailbox, (joe-job, too many bounces for mail from that user,
...). It was not a violation of a rate limit from your IP address
to Gmail.
Gmail's rate limit on mail to individual users is a major PITA for
real MTAs. Ultimately all the mail arrives anyway, but giant queues
build up on the sending MTA, needlessly delaying mail for other
users.
--
Viktor.
