Robert,
Do not confuse POP-3 with SMTP. POP-3 is a way to RETRIEVE mail only.
When you send mail, you utilize SMTP. It sounds like the most likely
explanation is independent of all of the above though. Either your SMTP
options in your E-mail program are incorrect (i.e.: an invalid SMTP host) or
the DNS server (that the SMTP server you connect to to send mail) can not
correctly resolve the domain of your mail host that is the final delivery
point.
The (traveling) life of an E-mail
-----------------------------
Sender's mail client sends mail (SMTP) to it's listed SMTP host.
The SMTP host then decides if the user is local:
Yes, Skip to Drop step
No, Pass mail on
Pass mail onto server that holds the desired recipient (again utilizing SMTP)
Drop mail into recipient's mailbox
Recipient checks for mail (POP-3)
-----------------------------
As for on-demand POP-3, that is controlled by the inetd daemon. When a
request to the POP-3 port is received, inetd calls the POP-3 server program
which then processes the actual request (to retrieve user's mail). The same
goes for IMAP if you choose to *retrieve* your mail that way.
Summary: your POP-3 settings on your server should not have anything to do
with your server's ability to receive mail. Look either at your sending
e-mail program's SMTP setting and/or check that your server's DNS entry is
current and correct.
Enjoy,
Woody ([EMAIL PROTECTED])
rharvey wrote:
>
> under service control in linuxconf
> pop-3 says it it enabled on demand
> I can send an email at from mydomain.net
> but when I try to send a reply back or I try to send a new mail to my
> domain.net it says Host unknown (Name server:
> server1.rdcomputersolutions.net.: host not found)
> does on demand cause this? if not what does?
> please help.
>
> thanks
> Robert
>
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