Forum Discussion
Sending to Yahoo e mail accounts from my Outlook e mail
I have been able to send from my Outlook account to other e mail users that have a Yahoo account. about 4 weeks ago it has changed and I get error messages when I send to a person with a Yahoo mail a...
I also have a client with this problem.
They are receiving a bounce with this error -
Remote server returned '550 5.4.300 Message expired -> 451 [RL01] Message temporarily deferred'