Can't log in from Evolution or Roundcube

[Ken Wright]

On Sat, 2022-01-08 at 11:05 -0500, Dave McGuire wrote:
> On 1/8/22 12:28 AM, Ken Wright wrote:
> > > > > > When I try to log in to my mail server (ubuntu 20.04,
> > > > > > Postfix 3.4.13, Dovecot 2.3.7.2) I get a response saying
> > > > > > "Source stream returned no data”.  At least to me, that's
> > > > > > not particularly informative.  Is it any more informative
> > > > > > to anyone else?
> > > > > 
> > > > >      The last time I hit that, I'm pretty sure it was because
> > > > > I was going to port 80 instead of port 443 to reach
> > > > > Roundcube.
> > > > 
> > > > I'm using port 143 for receiving and 587 for sending; I didn't
> > > > think 443 was for email.  Am I mistaken?  (Not at all
> > > > unlikely!)
> > > 
> > >     Nono, for your web browser's connection to Roundcube.  I
> > > could be barking up the wrong tree here, but I'm pretty sure
> > > that's the error I hit.
> > 
> > Thanks for the clarification.  I just tried Roundcube again, and
> > got the error "Connection to storage server failed."  I also
> > checked the nginx script for Roundcube and commented out the
> > references to port 80, then restarted nginx.  Same error.  So I
> > tend to think it's a server issue, not a client issue.  Does that
> > make any sense?
> 
>    It makes sense, but that's a different error than the one you got 
> having to do with either its connection to Dovecot or possibly a 
> back-end database server. (MySQL?)

MariaDB.  Now it's time for me to clarify.  The "source stream returned
no data" error is in Evolution; the "connection to storage server
failed" is in Roundcube.  So I'm seeing similar errors in two different
email clients trying to get to the same server.

I know there are any number of reasons for a failed connection to
Dovecot, but I just don't have the experience to figure this one out.

Ken