Mail will not go out of company. Are my external DNS MX settings correct?

Here is what my Mail Exchanger (MX) shows on Server 2003 RC2:

Host or child domain: (same as parent folder)

Fully qualified domain name (FQDN):
continentalweb.com

Fully qualified domain name (FQDN) of mail server:
mail.continentalweb.com. (IS THEIR SUPPOSED TO BE A PERIOD AT THE END HERE?)

Mail server priority:
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supercell29Asked:
Who is Participating?
 
bluetabCommented:
The period is added automatically by a lot of DNS servers and is OK.  You don't need an MX record to send mail, it is used for receiving.  What kind of error message do you get when you try to send mail externally?
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supercell29Author Commented:
I am not getting any messages when sending out. I can send internally but not externally. I assumed that it is our DNS that is the issue.
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supercell29Author Commented:
...well some of us are getting errors when trying to send out of the company:

From: Mail Delivery Subsystem <MAILER-DAEMON>@mail.continentalweb.com
Date: October 16, 2007 2:35:41 PM CDT
To: "il prepress" <ilprepress@continentalweb.com>
Subject: Warning: could not send message for past 4 hours

    **********************************************
    **      THIS IS A WARNING MESSAGE ONLY      **
    **  YOU DO NOT NEED TO RESEND YOUR MESSAGE  **
    **********************************************

The original message was received at Tue, 16 Oct 2007 10:35:34 -0500
from localhost [127.0.0.1]

   ----- Transcript of session follows -----
<cmcallester@stuartassoc.com>... Deferred: Connection reset by cle1.visn.net.
Warning: message still undelivered after 4 hours
Will keep trying until message is 5 days old
Original-Envelope-Id: D6AA50C5-391E-4D0E-9CF8-C48603920F03@continentalweb.com
Reporting-MTA: dns; mail.continentalweb.com
Arrival-Date: Tue, 16 Oct 2007 10:35:34 -0500

Final-Recipient: rfc822; cmcallester@stuartassoc.com
X-Actual-Recipient: RFC822; cmcallester@stuartassoc.com
Action: delayed
Status: 4.2.0
Remote-MTA: DNS; cle1.visn.net
Last-Attempt-Date: Tue, 16 Oct 2007 14:35:41 -0500
Will-Retry-Until: Sun, 21 Oct 2007 10:35:34 -0500

From: "il prepress" <ilprepress@continentalweb.com>
Date: October 16, 2007 10:38:13 AM CDT
To: cmcallester@stuartassoc.com
Cc: "Dave Wyzukovicz" <dwyzukovicz@continentalweb.com>
Subject: 12 pager Z7068
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ChiefITCommented:
Sounds like your SMTP service has been stopped on the mail server
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supercell29Author Commented:
Sendmail's queue was deferring emails. I had to go in there and unclog it. The SMTP plumber some would say. Thank you for all your words of wisdom.

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