Hi all I can receive emails - but not send them. However with any other client (e.g. Mac Mail, Thunderbird etc) I can send and receive. I have tried changing outgoing email ports to 587, 80, 20 to no avail. Quite disappointed with this issue - and would like to use outlook - if it could only work. At the moment my outgoing email is smtpout.asia.securerserver.net (same as my incoming).

It used to work then just stopped about a week ago. The Microsoft help desk said to verify and change my outlook 365 mail password (not sure why they said this - but still didn't fix the problem. I replied on the ticket help desk but they have ignored it.

Th error message is usually 'An operation on the server timed out. The server may be down, overloaded, or there may be too much net traffic.' Best salesforce app for outlook for mac.

Common problems and their solution when email is stuck in the Microsoft Outlook Outbox and won't send. › Messages are stuck in the Outbox. Last reviewed on May 10, 2018 287 Comments. Applies to: Outlook 2016 (Win), Outlook 2013, Outlook 2010, Outlook 2007. The Windows Store Outlook App; Emails are not shown in the People Pane (Fixed).

But sometimes (and more recently) 'An unknown error has occurred in Outlook.' Why would the other mail platforms work - but not this outlook? Any suggestions greatly appreciated as microsoft have not answer my response to their tickets (ticket # Cheers Donovan.