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Justin Gombos wrote:
>
> Ibiblio.org rejects my HELO command 

Why are you sending ibiblio a HELO command?
Why don't you just send your message to dedicated
SMTP server?

> because the hostname is something I made up

Why are you making up a hostname?  Why don't you get 
a mail account like a normal person?

> and no DNS server would be able to reference it 
> outside of my LAN.  

No wonder ibiblio isn't cooperating with you.

> I have seen this error before from other servers.  

I'm not surprised.

> Perhaps I could use a hostname like microsoft.com 

Perhaps you should get a normal mail account, like gmail.

> but it will probably try to match IPs and reject it.

I would hope so.

> The SMTP server is rejecting it, so it wouldn't matter.

Which SMTP server?  Your SMTP server?  Or are you trying 
to access ibiblio's SMTP server directly?

> Users who subscribe to large ISPs, and run their own mail 
> server on a dynamic IP space are likely to encounter this.

I see no problem with people running their own local SMTP 
server (I've done that myself), but it sounds like your
SMTP server has a problem delivering non-local mail.

> Most people are running a GUI MUA like Thunderbird, 

It's got nothing to do with a GUI.  Most mail clients
(GUI and non-GUI) upload to dedicated (non-local) SMTP 
servers. 

> which interfaces with their ISPs server.  

ISP subscribers have authorization to use their ISP's
server, so most use that server.  But they do have other 
options -- they can upload mail to any SMTP server for 
which they have authorization.  

> My configuration is self serving, so I'm not dependant 
> on my ISPs mail server.  

That's fine as long as your self-serving setup is working
well.  Clearly, it is not.

Cheers,
Steven