Server not listening on port 25
Question asked by Peter Konshak - January 29, 2016 at 6:08 AM
Unanswered
I have an existing SM 11.x install running on Server 2008.  The hardware is getting a little old, so I intended to virtualize it and move it to a machine running Server 2012..
 
I used the disk2vhd to create an image of the server, copied it to the new hardware, created a virtual server, gave it memory, etc and attached the disk.  I unplug the old server, and gave the new virtual instance the same IP address the old one had.  Now, they are essentially the same, except one is running virtually under Hyper-V.
 
After bringing it up, Smartermail is up and running, and I can connect to port 80, login, etc.  I ran the diagnostic and it seems fine.  I can send mail to users on my domain.  I can see sites on the internet.
 
Problem is, it won't accept incoming mail from outside.  Port 25 is not accepting a connection.
 
telnet localhost 25 -- cannot open a connection
 
No firewall enabled.  Checked bindings in SM, port 25 is listed and enabled.  Compared settings to older working server, they are the same.

What else can stop port 25?
 
 

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Bruce Barnes Replied
Has the IP address of the new server changed?  If so, did you remember to remap the PORTS to the new IP address?
Bruce Barnes
ChicagoNetTech Inc
brucecnt@comcast.net

Phonr: (773) 491-9019
Phone: (224) 444-0169

E-Mail and DNS Security Specialist
Network Security Specialist

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Peter Konshak Replied
Bruce, thanks.  It does have the same IP address.  I think I figured out what it was -- in the process of virtualizing the server, a couple of "ghost" network adapters were left behind.  Deleting those and rebooting seems to have cleared things up and port 25 responds to telnet now -- at least on a test system.  I'll try the export again another day, hopefully that is all it was.
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Bruce Barnes Replied
Glad you found the solution.  Please keep us posted when you test.
Bruce Barnes
ChicagoNetTech Inc
brucecnt@comcast.net

Phonr: (773) 491-9019
Phone: (224) 444-0169

E-Mail and DNS Security Specialist
Network Security Specialist

Customer Service Portal: https://portal.chicagonettech.com
Website: https://www.ChicagoNetTech.com
Security Blog: http://networkbastion.blogspot.com/

Web and E-Mail Hosting, E-Mail Security and Consulting
0
Pawel Turczyn Replied
I find the solution: its not IP the problem is firewall
here is the solution
www.wikihow.com/Open-Port-25

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