[Webinar] Streamline your web hosting managementRegister Today

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 288
  • Last Modified:

Port 25 blocked and can't figure out where

I called my ISP and they said it is not blocked on commercial servers.

I have a linksys router by cisco and its not blocking port 25.

I disabled windows firewall and trend temporarily and it appears port 25 is still not accessible.

Any ideas?
0
cnl83
Asked:
cnl83
  • 9
  • 5
  • 4
  • +1
1 Solution
 
CoffinatedCommented:
Do you have any service running on port 25? try telnetting to it form the outside
telnet hostname 25

If you do have a service enabled on it, make sure NAT is properly configured, all routes, IP, subnets are also properly set up.
0
 
Chris_Ryan81Commented:
Where is it being blocked?  Inbound to a server, outbound to internet, between two servers...

How do you know it is not being blocked by the Linksys?  (it isn't likely blocked by default)
0
 
Chris_Ryan81Commented:
0
The new generation of project management tools

With monday.com’s project management tool, you can see what everyone on your team is working in a single glance. Its intuitive dashboards are customizable, so you can create systems that work for you.

 
cnl83Author Commented:
I can't telnet port 25 from inside the network. I just tried from a pc on the network.
0
 
Chris_Ryan81Commented:
What is your destination, are you trying to reach an external SMTP server, such as with an ISP?
0
 
CoffinatedCommented:
Run' netstat -an' on the server, check if port 25 is open.
http://social.technet.microsoft.com/Forums/en-US/winserverPN/thread/9d661ff2-c153-400e-a6b2-dbf90b213426/

Most likely it is not running, that's why you can't reach it.
0
 
cnl83Author Commented:
I ran netstat -an it I didn't see anything about port 25.
0
 
cnl83Author Commented:
trying to telnet server on local network.
0
 
CoffinatedCommented:
Check the services, make sure it is running on port 25. If nothing is running on it, you will not be able to connect to it.
0
 
cnl83Author Commented:
How do I check the services to see if they are running on 25?
0
 
cnl83Author Commented:
Services are actice
0
 
Alan HardistyCo-OwnerCommented:
If you type the following from a command prompt:

netstat -anbp tcp | findstr :25

Do you see anything as the result?

Also test port 25 on www.canyouseeme.org and see if you get SUCCESS as the result.

What should be listening on port 25 on your server?  You don't mention Exchange in the topics.

Alan
0
 
cnl83Author Commented:
That all failed.

Im using smartermail server from smartertools.com
0
 
Alan HardistyCo-OwnerCommented:
Okay - is it running and configured on port 25 as it sounds like it isn't.
0
 
cnl83Author Commented:
Im going back and forth with smartermail techs to ensure it is.
0
 
Alan HardistyCo-OwnerCommented:
Okay - shout once you have confirmed it is (should be) and then it still isn't working.

The netstat command I posted should help determine if your server is listening and then the canyouseeme.org site should verify if it works externally.

Here if you still get nowhere.

Alan
0
 
CoffinatedCommented:
smartermail techs should be able to pinpoint the problem and get you up and running.

As stated already you can do a netstat command or telnet 127.0.0.1 25 (on the server) or telnet server 25 from another computer to test it.

If they tell you it is running test it locally on the server first, then from LAN and WAN.
0
 
cnl83Author Commented:
It was a smartmail configuration issue. There was nothing listening on port 25 in the first place.
0
 
Alan HardistyCo-OwnerCommented:
Good - so are you getting emails now happily?

Alan
0
 
cnl83Author Commented:
yes
0
 
Alan HardistyCo-OwnerCommented:
Excellent.

Don't forget to close the question down then select the comment or comments that helped you solve the problem, or you can accept your own comment and optionally award some/all points to other comments if they were useful.

Alan
0

Featured Post

[Webinar] Improve your customer journey

A positive customer journey is important in attracting and retaining business. To improve this experience, you can use Google Maps APIs to increase checkout conversions, boost user engagement, and optimize order fulfillment. Learn how in this webinar presented by Dito.

  • 9
  • 5
  • 4
  • +1
Tackle projects and never again get stuck behind a technical roadblock.
Join Now