Outlook 2007 calendar entries stop synching

[Darran]

Hi

I have my main email account set up on 123 reg and as advised by them (123 reg) i should use oxtender to access via Outlook.

My mail synch is ok but for some reason my calendar entries stop updating. I synch my phone with 123 reg no problem and get a 2 way synch but Outlook just stops working.

First time it happened I created a new Outlook profile and all synched nicely but after a week or two Outlook calendar synch stops?

Has anyone had anything similar and could recommend a fix or best practice?

Thanks
Darran