SMTP Not Working

[Nuclear Bob]

Thanks for everyone's help. I believe that the problem is that the
"anti-spam" measures on the SMTP server are the ones that mess me up.

There are apparently 2 solutions:
=> Use another SMTP server, (i.e. the one from my ISP)
I have concerns about this, specifically privacy and monitoring. PGP
is not an option, because the other end may not have it, I'm not always
dealing with computer-savvy people. Can the SMTP server monitor who and
what I send out?

=> Implement my own SMTP server. From what I gather, this is possible with
"sendmail". Fortunately, I am still happily running that dead OS, OS/2,
which comes with sendmail. How do I configure PMMail/2 and/or sendmail to
talk with each other?


Thanks!
Isaac

On Thu, 23 Sep 1999, John Thompson wrote:

> On Thu, 23 Sep 1999 18:17:29 -0700 (PDT), Atomic Frog wrote:
> 
> >My SMTP doesn't seem to be working anymore. I used to grab
> >things from my POP server and send them off via SMTP, however, it
> >stopped working in the past few weeks. I don't believe I've made a
> >change in my settings.
> >
> >I get this typical error message in the log:
> >
> >Thu, 23 Sep 99 18:10:39 ==> 550 <bigjoe@joes_company.com>... Relaying
> >denied ; This is the error that resulted from the RCPT TO command
> >
> >Sending via POP still works. As does SMTP, if I send to another
> >recipient with the same domain, but not outside.
> >
> >For example, my mail server is: mail.isp-host.com
> >If I send to myself or another user @isp-host.com using SMTP, it's
> >fine. As soon as I try an address outside the site, I get the error
> >described above.
> >
> >Can anyone tell me if this is a problem in my PMMail setup or my ISP
> >problem?
> >I have it using the default Port 25 on SMTP.
> 
> Many ISP's are restricting access to their SMTP servers to users within
> their domain; this helps thwart spammers who often find an suspecting ISP
> with an open SMTP server to relay their spam.
> 
> There are a couple ways around this.  First, you can see if your ubc.ca
> service provider has anSMTP server you can use.  Or, you can run your own
> SMTP server on your machine.
>