Forgive the long description.
I have a customer who runs SBS2003 Server using Exchange, it was running perfectly untill we tried to make a change yesterday, the customer wanted the "email alerts" to work in companyweb. We were trying to get it to work and went into control panel, add remove WINDOWS components and removed the smtp tick box from under "application server - IIS" (because other post had said to make sure this was working).
This did not work and now emails go from outlook but dont reach the destination, we tried reinstalling IIS and SMTP, then Exchange SP2 but no incoming or outgoing emails.
I have noticed that if I go into Server Queues the "smtp mailbox store" is using X400 MTA, whereas before I thought it used something else?
As a side note companyweb does not look the same now and the links dont work 404 message,
We do not care now if companyweb ever works again but just wants the emails working !
Any ideas where to start?