Outlook not working. I have a large amount of mailboxes that are ‘killing’ it.

Hello,

This relates to a situation I have at work that our techs have been unable to fix.

I am no tech so please bare with me.

We run Windows 7. As a part of this we use Outlook.

My Outlook has stopped working. I can get into Outlook however I cannot send any e-mails but I still receive them.

I work for a large organisation with offices all over the country.

To support our staff we have a large number of mailboxes that they can access.

I help to support roughtly 200 mailboxes. I do this by providing access etc to these for staff.

The mailboxes are not attached to my Outlook but I work through the address book in Outlook to provide access etc.

We have recently migrated a large number of these mailboxes from Notes to Outlook.

This is when the problem started.

We tested the theory by removing one of my colleagues access to the mailboxes, he does the same sort of work.

Once this was done his Outlook started working again.

So we know what the problem is but how do we resolve it?

Obviously I have to have access to the mailboxes to do my job so I can't 'remove' them.

Any ideas would be appreciated as this has our techs stumped.