How to stop Outlook 2007 losing connection to an IMAP server

[Roger]

I am using Outlook 2007 and Windows 7 on a Lenovo laptop. I am accessing an
IMAP server on 1&1. I am constantly losing connection to the IMAP server. The
initial connection is OK and emails are sent and received fine, but the
connection dies after a few minutes and a system reboot is required before it
works again, only to die a few minutes later.

I have set the same IMAP mailbox up on a Dell desktop computer running
Outlook 2007 and Vista and this does not lose the connection at all. I
suspected the virus software as the Windows 7 laptop has F-secure and the
desktop has Norton. Have tried disabling the F-secure email scanning but it
seems to make no difference. Please help

 

[DL]

I use Fsecure and it causes no problems

 

[Roger]

I'm still having the same issue. Is anyone able to help?

 

[Stuart]

Roger

I have exactly the same issue, initial send and receive ok, but the
connection then drops and outlook goes in to offline mode with an unable to
connect to the server message. I have a similar set up: on a desktop Windows
7, Outlook 2007 and F Secure with 1&1 email account on a Imap connection.
Would be interested if anyone is aware of a solution.