Hi there,
I've been facing this weird issue where users of one particular server are experiencing extreme delays when sending emails from outlook/OWA.
Outlook would put the email in the sent folder but it wouldn't be picked up by the message queue until very very much later (sometimes up to 1 hour). OWA would leave the message in the draft folder.
The MSGTRKM log give me this error: TooManySubmissions, Too many concurrent submissions from mailbox database. The limit is 8.
The message is quite easy to understand but I can't seem to figure out the root cause... anyone has any input?
Much appreciated.