I keep getting the alert that Mail is unable to send with the selected server. I use the Mail connection doctor and .mac account and server are logging in ok. This problem is intermittent - there are days I don't have any trouble, and today I have to try about 6 times to send an email. I get the problem at home and at work - both networks were fine yesterday. I've switched from WiFi to Ethernet and the message eventually sent.
4/30/09 at 10:59am