🚀 go-pugleaf

In article 
<dck-72EE63.18354815072004@nntp.bloor.is.net.cable.rogers.com>,
 David C King <dck@myprivacy.ca> wrote:

> Under the Settings, Hosts section there is a box for Sending Mail. 
> Within that box is a check-box for "Use mail-exchange records". That was 
> checked. I unchecked it and 'voila', it all works.

So what's the deal, your mail client was trying to talk directly with 
the destination MX instead of relaying through Rogers SMTP?  (e.g. if 
you were sending me mail, your client would have tried connecting to 
reverb. or basil.zygoat.ca directly?)

> I then ran a DNS check on the SMTP server that Rogers has given us to 
> use. Got an IP number. Checked that when messages were going out, they 
> were going to a different IP number.

How did you check the latter?

> Ergo - Rogers mail must be going out via Yahoo servers - which have a 
> different IP number than Rogers. That's how I realised that the problem 
> was with the MX record that Eudora was looking for.

Really, an MUA (mail user agent) shouldn't be looking up MX records ever 
(that's the job of the MTA -- mail transfer agent, on the SMTP server).  
Eh?

> I then dug through every pane in the Settings of Eudora and found the 
> Hosts had a setting for MX which I unchecked ... and it worked!!

Well, glad you've got it working again.

-ben