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Your firewall is not forwarding port 25 to your Exchange server.  What kind of firewall do you have? 2. With port forwarding only the specific required ports are forwarded, thereby limiting the potential pathway to your server and making it easier to secure. How we do that is one of two ways: 1.) Setup the DynDNS information in the Netgear router. However, managing two firewalls was often seen as excessively complicated and expensive. https://community.spiceworks.com/topic/29834-exchange-2003-i-can-send-but-i-can-t-receive

It would be great if you could tell me exactly how to check the address space on the connector as well.Thanks! Please try again later. Difference between Animal Handling Skill and Animal Friendship Spell? Does bolting to aluminum for electrical contact have any oxidation concerns?

Help Desk » Inventory » Monitor » Community » TechNet Products IT Resources Downloads Training Support Products Windows Windows Server System Center Browser   Office Office 365 Exchange Server   SQL TECHNOLOGY IN THIS DISCUSSION Join the Community! Modem has the correct ports forwarded After my investigations, i have found i cannot telnet to an external mail server either. They cannot send and receive external emails.

But in your case, you already have an e-mail domain registered...we just need to point it to your Exchange server) We just have to be sure that when we ping your Send me notifications when members answer or reply to this question. I.e. I am wanting to retire the 2000 machine.

We contact Melbourne IT and have them create an MX record to forward ALL traffic to your DynDNS address. But Thanks for patching this up for us, so we don't have to slam dunk Exchange 2013! I can't get a static IP with my ISP, so I signed up with DYNDNS to host my external Domain Name.I can send emails via my exchange to the outside world Stay logged in Sign up now!

That less a DMZ and more a huge hole in your firewall (or the incomplete protection provided by NAT). https://www.petri.com/forums/forum/messaging-software/exchange-2000-2003/34427-exchange-2003-unable-to-receive-external-emails Projectiles in a world devoid of gunpowder Wrong way on a bike lane? Can't Receive Outlook 2003 Messages Started by SysTech Guy , Feb 25 2008 01:37 PM Please log in to reply 3 replies to this topic #1 SysTech Guy SysTech Guy Members E-mail: Submit Your password has been sent to:[email protected] tech target logo About Us Contact Us FAQ Community Blog TechTarget Corporate Site Terms of Use DMCA Policy Privacy Policy Questions & Answers

I have Win 2003 Server and Exchange 2003. http://kelcours.com/exchange-2003/exchange-2003-cannot-receive.html We'll email youwhen relevant content isadded and updated. Can anyone please help... 30 pointsBadges: report James Murray Dec 16, 2011 8:49 PM GMT I've found the problem as simple as a mis-spelling of the email addres in the Start using MS Lync for communication and meetings.

NDR's came after *days* and very disruptive to business email delivery. If the server is also your file server, then putting it in a DMZ isn't such a good idea). There we enter the account info so your router can update DynDNS with the IP changes of your server. 2.) We download the DynDNS updater tool from the website and run Check This Out Co-author of Ruby on Rails Enterprise Application Development, published by Packt publishing.

Cheers, Mark Post #: 1 Featured Links* RE: MS Exchange 2003 cannot send and receive external e... - 15.Dec.2008 11:11:54 PM Nazim Posts: 170 Joined: 23.Oct.2008 Status: offline Did My Internal EMail is ok. Reply Leave a Reply Click here to cancel reply.

simond, #5 2007/12/18 ReggieB Geek Member Alumni Joined: 2004/05/12 Messages: 2,786 Likes Received: 2 Trophy Points: 608 Location: Worcs.

See if that works, if not then you may have issues with:   a) The domain you have defined as authoritative for Exchange 2003 b) The address space on your connector Have they sent emails to external addresses successfully? but are your reverse DNS zones setup correctly? Co-author of Ruby on Rails Enterprise Application Development, published by Packt publishing.

Okay, we'll call this one a tie. 0 1 2 Next ► This discussion has been inactive for over a year. Also traffic between the DMZ and the main network would have to pass through the firewall and therefore could also have controlling rules applied. Friday, August 31, 2007 6:16 PM Reply | Quote 0 Sign in to vote Great! this contact form Using the site is easy and fun.

All submitted content is subject to our Terms Of Use. After turning the Exchange SMTP Logs to Medium, The event viewer shows up an error.