My provider changed to yahoo mail and my Imac seemed to be ok. Now it will only receive emails and not allow me to send any. Been through all settings with Sky(provider) and they are set correctly. When I try to sen an email it comes up with unable to send, server off line. Could any one help me sort this out?
Launch the Network Utility app in /Utiloities, select Ping, enter the outgoing mail server's address, and click on the Ping button. If you get the normal responses, then the server's online and you'll need to ask the ISP why it's reporting it's offline.