We have a little Exchange/Outlook installation here that fetches the mails from our provider with POP3.
Now to be able to send emails outside our organisation, I added another SMTP address to the Exchange User:
firstname.lastname@example.org (Default / Reply Address) email@example.com
Sending email works using the default address. But now there is an error message each time we start Outlook.
Outlook tries to autodiscover using autodiscover.ourcompany.com which doesn't exist. Our autodiscover files are placed on our local server. I think all the servers are discovers, because everything works as expected. Everything except the error message on each Outlook start. (The error message is actually because of an invalid certificate but I don't see why Outlook should contact an external host at all!)
So how can I solve this? Forcing Autodiscover on every Outlook client to use the local hosts? Or ist there an even better way?