This does sound like your server settings have somehow been corrupted. The two messages you mention cite two different SMTP servers from two different providers. If you only have one provider, then something is definitely wrong. I would go into Account Settings and check. Since you are getting emails, your download server settings must be OK. At the bottom of the first page of each email in the account settings is where you select what outgoing server you use. Make sure that is set correctly for each email account. Then check in the Outgoing Server settings at the bottom to make sure the outgoing server you are using has the correct server name, account, and password and the type of security. Your provided should provide those for you. The settings for the outgoing server may be different that for the download server.