Our company recently switched it’s email server from Exchange Server. Not thinking, I deleted the Exchange item: Tools / Account Settings / Email / Remove. Not a good move!
Normal Outlook data files are PST files (e.g. outlook.pst). Exchange Server files are .OST files. Microsoft intentionally do not provide a way to convert an OST file to a PST file! Oh shit! There are commercial solutions and other solutions that may or may not work to convert the file.
After the panic subsided, I realised that I still had the company’s Exchange Server setup on my old laptop’s Outlook. So, I copied the OST file across to that laptop (so I had the emails that were present at the time I stopped using Exchange), fired up Outlook which told me the server was AWOL (which didnt matter), all my email and folders were there! Phew.
I then Archived ALL the folders (File / Archive, etc which copies the data to a PST file – e.g. archive.pst). I then copied the archive.pst file back to my new laptop, started Outlook and voila, all the old email was available.
So, the moral is, if you are switching from Exchange and not migrating your old email to a new mail system, ARCHIVE all your old email BEFORE you disconnect the Exchange data file from Outlook!
This took a long time to work out. As usual, someone had walked the path before me but it took a while to find that solution amongst all the false leads (in my case).
Our company had recently switched it’s email from Exchange Server to Gmail. (Yes, they are aware of the security issues. Anyway …). Not liking the GMail interface etc I wanted to continue using Outlook for my mail client and using GMail’s IMAP to do that. After setting that up (lots of posts on the net on how to do that), I noticed the following problem.
Important note: See this post BEFORE you delete your old Outlook Exchange file. If you do it the wrong way you will lose all your email!
The problem: When I created a new email to some of my contacts, or replied to an email from one of those same contacts, the email stayed in the Outbox of my default PST file. Sometimes it threw the error 0x80040201. Nothing I did would cause Outlook to send the email. Other email addresses worked fine! Very weird. Eventually I discovered the post below that explained that the problem was due to the Outlook.nk2 file that contains the data for the auto-complete functionality of Outlook. That file remembers whether the address is an Exchange Server address or an SMTP address. And guess what? All the addresses I had problems with had Exchange settings.
So, see the LAST item on this post: http://www.pcreview.co.uk/forums/getting-error-0x80040201-t1872774.html which explains a couple of fixes.
Alternatively, download this: http://www.nirsoft.net/utils/outlook_nk2_edit.html and delete all the email items with an account type of EX (as opposed to SMTP) and follow the instructions. You will then need to type the full email address the next time you send to that person and it will then remember the correct settings. Some addresses had both EX and SMTP entries so deleting the EX entries allowed the SMTP entries to correctly auto-correct.
I hope this saves someone the hours it took for me to find the solution.
NB: there is still a problem with Outlook that appears to be a bug. To get the email to actually send, you must click Send/Receive / Send ALL. I haven’t found a way for it to send automatically but at least I can send email with a couple of extra button clicks!
Now, I wonder how well Thunderbird’s IMAP works?