Solved

exchange inbound mail issue.

Posted on 2008-06-15
9
271 Views
Last Modified: 2008-09-17
Hi Im running SBS and exchange 2003.
Having trouble with inbound mail from external senders.  
1.  Mail sent outside and local is ok
2.  Mail sent from external networks does not come in.  I receive no bounceback sending from external network.
I can telnet to the mail server and seems ok.  All looks ok just doesnt seem to receive mail.
I have checked mx records, all seems ok there. also

anything else i can check.  thanks
0
Comment
Question by:rick81
9 Comments
 
LVL 6

Expert Comment

by:Nyah247
ID: 21788243
Do you have a firewall in between that is not allowing inbound port 25?  Have you tried downloading, installing and running smtpdiag from microsoft?  This tool is great at helping to find problems.
0
 
LVL 2

Expert Comment

by:DSchel01
ID: 21788769
Try to see if you can telnet in to the public IP address to port 25  (telnet mail.nyah.com 25) from an external source. If you cannot make a connection it would indicate a router/fireall connectivity issue or the SMTPSVC may be stopped.

If you can make the connection, I would enable logging on the Default Virtual SMTP Server in Microsoft IIS Log file format and try to track some messages using Message Tracking.

Dan
0
 
LVL 6

Author Comment

by:rick81
ID: 21790309
"I can telnet to the mail server and seems ok"  It is not a firewall issue
I have had to change port 25 as the ISP blocks this.  Have changed and tested and can telnet.

Mail does just not seem to recieve.  Inbound.  Internal and outbound is ok.
Ill try again today incase of dns propogation delay and then will look into the message tracking.

Thanks
0
 
LVL 6

Author Comment

by:rick81
ID: 21799027
ok.  i can telnet to mail server on port 26 from external.  responds ok.
i still cannot get any mail inbound though.  and no bounce back.  its very strange.

im waiting for the logging to kick in.  is there anythign else i can look into in the meantime?
0
How does your email signature look on mobiles?

Do your employees use mobile devices to reply to emails? With mobile becoming increasingly important to the business world, it is in your best interest to make sure that your email signature looks great across all types of devices.

 
LVL 6

Expert Comment

by:Nyah247
ID: 21902831
If you cannot receive email from external networks and there are no incoming messages at all I would definitely check your MX records and be sure they are correct.  Usually these are held at the same place hosting your external DNS if you do not host your own.  Generally this would be your ISP or another hosting service like GoDaddy or Register.com.  A good way to check would be to use the tools at DNSstuff.com and see if your MX records are showing up correctly or at all.  
0
 
LVL 6

Author Comment

by:rick81
ID: 21913119
changing port 25 to another port was the issue.
I contacted the ISP and got to unblock port 25.  change smtp port back to 25 and all ok.

0
 
LVL 6

Expert Comment

by:Nyah247
ID: 21915534
Thanks for the follow-up...  Glad you got your issue resolved!
0
 
LVL 1

Accepted Solution

by:
Computer101 earned 0 total points
ID: 22506966
PAQed with points refunded (250)

Computer101
EE Admin
0

Featured Post

IT, Stop Being Called Into Every Meeting

Highfive is so simple that setting up every meeting room takes just minutes and every employee will be able to start or join a call from any room with ease. Never be called into a meeting just to get it started again. This is how video conferencing should work!

Join & Write a Comment

Check out this infographic on what you need to make a good email signature that will work perfectly for your organization.
Learn to move / copy / export exchange contacts to iPhone without using any software. Also see the issues in configuration of exchange with iPhone to migrate contacts.
In this video we show how to create an email address policy in Exchange 2013. We show this process by using the Exchange Admin Center. Log into Exchange Admin Center.:  First we need to log into the Exchange Admin Center. Navigate to the Mail Flow…
how to add IIS SMTP to handle application/Scanner relays into office 365.

746 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now