Hi J.
Are you sure that SMS schould retry this. Below is one of the 857 messages in the outbound queue. It still there after a couple of days.
emailaddress
bounce-11672-763004-10040-860@mail.domain.be Saturday, Jan 16, 2010 09:01:36 PM CET 452 Too many recipients received this hour
And some new error codes pop up like
450 4.7.1 Recipient address rejected: Policy Rejection- Greylisted for 60 seconds: Please try later
452 4.1.1 Greylisting in action, please try again later
421 PR(dt1) The mail server IP connecting to Windows Live Hotmail server has exceeded the rate limit allowed on this connection. If you are not an e-mail/network admin please contact your E-mail/Internet Service Provider for help. For e-mail delivery information, please go to
http://postmaster.live.com
The vendor of the mailing software indicated that some MTA's like powerMTA use some kind of backoff policy when encountering these kind of messages for that domain, and backs off for an hour. Other messages just continue to send.
Could that be accomplished by Brightmail?
thanks!