We have an offsite IMAP server, hosted by a datacentre, and we have a shop which uses a Microsoft Windows XP machine for a till, and uses Microsoft Outlook Express to receive the emails via IMAP.
Last Wednesday the emails would come through in Microsoft Outlook Express, but only the header; if you selected the email to preview in the preview pane, the preview would be blank, also if you double click the email to fully open it, the email would be blank; and after 60 seconds (or however long you tell it to wait) we receive an error message which says:
If we add that mailbox at another site, for example, using Microsoft Outlook 2011, the emails come through fine.
If we delete the mailbox at the shop where the problem exists, and re-add the mailbox, the problem persists.
If we use a different program to download emails from the IMAP server at the shop... the problem persists
we have checked with our datacentre, and everything there is fine (as we know, because the emails work fine at another location)
the internet service provider say everything is fine.
Here is the spanner in the works....
if we add the mailbox on Another computer, at the same shop, the emails will come through, and download fine..... for about half a day, then we get the error message shown above...
this problem has got our datacentre engineer, us, and the ISP scratching their heads.
Hope you can think of anything we can.. I'll keep you updated..