I have a 2 server SharePoint farm.
All outgoing emails were working fine.
I just restarted both servers and now after that none of the emails are being sent. I am using OOB publishing workflow and it shows message:
The e-mail message could not be sent. Make sure the outgoing e-mail settings for the server are configured correctly
Even if I setup Alert on some list, it doesn't send email.
I have checked that outgoing email setting in CA is defined and like I said it was working fine without problems but after restart it is showing error.
What could be the cause of this and how to fix it?