We're having a host of issues that may translate to Outlook not being an ideal client for IMAP, but I am hoping the forum can provide insight to determine if it's a provider issue or a MS issue.
Specifically, we're having an issue using Outlook 2010 with the IMAP solution from GoDaddy.
After email is received in the Inbox, if the user manually moves emails to non-IMAP folders (an offline PST), they will appear to move to the folder, but then reappear in the inbox a short time later. This also happens with deleted emails- they'll disappear from the inbox only to reappear a short time later. If you check webmail, you will see that the moved or deleted email still resides in the inbox. (Note- if you are working in webmail with Outlook open and delete a message from within webmail, it's instantaneously deleted from the Outlook client, which is great, but we need it to work from within the Outlook client this way too- it deletes or moves immediately on the server).
It seems that what is happening is that either Outlook is not sending the proper command to the server that a message was moved or deleted OR perhaps the server gets the command, but fails to perform the action.
GoDaddy said that the only thing it could be is a "known Outlook issue" wherein message flags are not being delivered to their servers from the Outlook client. I've asked a number of reliable engineers and they've never heard of this issue (but think IMAP is wonky in general).
I have a harder time accepting that because other IMAP accounts seem to work in Outlook, and if flags/commands were not being sent from Outlook, then in theory, none of these accounts should work. Additionally, it's not consistent- sometimes it does work.
Outlook settings are correct according to the provider. Also, in Outlook, under More Settings->Deleted Items we DO have the Purge items when switching folders online option checked, as most of the time, we do want the deleted items to go away if we switch folders. I have noticed that sometimes, but not always, if I move/delete a message and then switch into the folder where it was moved to check that it is there (or another folder entirely to do other work), it doesn't return to the inbox as described above. It's not reliable, and isn't a real solution to the issue, and is not practical to do every time.
It's a huge problem for us because if you spend 40 minutes filing away your email only to have it all pop back to where it was, you've wasted a huge amount of time.
Any thoughts greatly appreciated.