They will often provide a clue.
I am having problems sending outging mail using Eudora. I recently installed Eudora 7.1, and incoming mail works fine. I am running Windows 7 Home Premium and we use Verizon Fios as our internet provider.
As far as Eudora settings, these settings have been verified:
Mail Server Incoming and
I called Verizon, and they told me to put outgoing.verizon.net in the SMTP Server (outgoing) field. I have Allow Authentication checked.
On the Sending Mail page, Email address is filled in correctly, the field Domain to Add to Unqualified Addresses is blank, and SMTP Server is outgoing.verizon.net SMPT Relay Personality is None. I have these fields checked: Allow Authentication, Immediate Send, Send On Check and Use Submission Port 587 is not checked. Last, Secure Sockets When Sending has If Available STARTTLS and Last SSL Info.
Another user has the same settings except for their entry in the SMTP Server (outgoing) field, and he is using something other than FIOS. Verizon can't help me any further because Eudora is not supported. Does anyone have this configuration working (Eudora 7.1, Verizon FIOS, Windows 7)? Thanks a million.