Hi All,
Currently, we received several posts about the problem:
When sending emails in Outlook for Mac 2011, if the attachment size is over 5MB, the email cannot be sent, and the following error occur:
“Error 18500” or
“HTTP error. The Server cannot fulfill the request”
I am sorry for any inconvenience this case has caused. We have an awareness of this issue and reported it to the related team.
And once there is any update, we will update it in this forum.
Once again, we sincerely apologize for the inconvenience this case has caused.
Your patience and understanding will be highly appreciated.
Best Regards,
Jason Jiang