I live in the central US where Comcast is King and they have some really stringent rules when it comes to emails sent to "anyone"@comcast.net.
I have a client that sends out a newsletter to 400-700 recipients.
Anywhere from 50 to 75 percent of any given mailing will be to Comcast.net email addresses
with exchange 2013 server set at defaults I am getting the dreaded error
452 4.1.1 Too many recipients for message on the outbound queues that are going to comcast.net
We have tried Constant Contact, and they didn't like it. It required too much scripting.
They really don't want to manually break the list down into pieces to sent it out in chunks because they feel that it is too much to maintain.
Is there a way from within Exchange 2013 where if an outbound message has more than x number of recipients, it will break that into smaller chunks automatically and stagger/delay the sending of each batch ?
I think if we can do that we can stay under Comcast's 25 concurrent connection, no more than 100 recipients per message, no more than 1000 recipients per day rules.
Any help would be much appreciated