Smtp Mail Server connections to outlook office 365


#1

Has anybody come across this error in your Lucee Mail Log files?

storedrv.clientsubmit; sender thread limit exceeded . Apparently Microsoft has made some changes to authenticated smtp emails being sent.

If so, has anybody found a workaround?

Thank you,

Dale


#2

Seems you are only allowed 3 concurrent connections per mailbox https://www.michev.info/Blog/Post/2075/controlling-smtp-authentication-for-office-365-mailboxes