Exchange 2010 Secure IMAP/POP

Posted on 2014-11-19
Last Modified: 2015-02-11
Hello!  I am trying to enable POP3/IMAP secure ports 993 & 995.  These ports show closed even thought he services are running and everything looks correct in the settings.  Can you please let me know what I might be doing wrong?

Exchange 2010 SP3 Enterprise
Server 2008 R2 Enterprise
Question by:Sedgwick_County
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 3
LVL 16

Expert Comment

by:Rajitha Chimmani
ID: 40452860
All ports will not be enabled by default. Try Telnet servername portnumber

And what is the source and destination where you see ports are closed? Just starting the services will not help. The ports must be open at the server/network level. Check for any firewalls between the client and server where you are checking

Author Comment

ID: 40452879
When I telnet nothing comes up.  POP and IMAP will only be enabled for internal network.  I am trying to connect from my PC (which is on the domain) to the server (which is on the domain).  I have full admin rights.  No firewall is enabled on the server.  I also did a netstat to see if I could see the port listening and I do not see that as well.  How do I get my server to listen on those ports?


* Go to POP3 and bindings show port 995 for the port I want to use for an SSL connection.  Then Authentication is set to secure logon with an x.509 certificate name listed and valid.  Under connection it shows Proxy target port as 110....does that need to be changed?

* Go to IMAP and bindings shows port 993 for the port I want to use for an SSL connection. Then Authentication is set to secure logon with an x.509 certificate name listed and valid.  Under connection it shows Proxy target port as 143....does that need to be changed?

LVL 16

Expert Comment

by:Rajitha Chimmani
ID: 40453027
If nothing comes up when  you telnet then that means the connection was established? In the POP3 and IMAP4 properties under General tab there is a banner string. If telnet was successful you must get that banner string.

Have you tried creating a test mailbox with POP3 enabled and test POP3 setup in Outlook?
Optimizing Cloud Backup for Low Bandwidth

With cloud storage prices going down a growing number of SMBs start to use it for backup storage. Unfortunately, business data volume rarely fits the average Internet speed. This article provides an overview of main Internet speed challenges and reveals backup best practices.


Author Comment

ID: 40453325
All of our users are enabled to POP3.  Only a few use it though.  We are just trying to switch to secured.
LVL 16

Expert Comment

by:Rajitha Chimmani
ID: 40453563
Ok, it should work fine though. What is the exact problem you have now? Where do you see the ports closed?

Author Comment

ID: 40453630
When I try to telnet to 993 or 995 it does not give the banner.  When I do netstat it does not show those ports are listening....thats what I think as well that its setup correctly in Exchange but I am not sure what I am missing.
LVL 31

Accepted Solution

Gareth Gudger earned 500 total points
ID: 40454220

Author Comment

ID: 40457948
Ok I might have found something that might help.  When I telnet to the server and use  telnet servername 110 I receive this:

220 SERVERNAME Microsoft ESMTP MAIL Service ready at Fri, 21 Nov 2014
 11:50:19 -0600

When I should receive this:
+OK The Microsoft Exchange POP3 service is ready.

Author Comment

ID: 40604756
I've requested that this question be deleted for the following reason:

Found different solution than what was suggested.

Featured Post

Instantly Create Instructional Tutorials

Contextual Guidance at the moment of need helps your employees adopt to new software or processes instantly. Boost knowledge retention and employee engagement step-by-step with one easy solution.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
when apply search old messages are not showing up in office 365 4 57
Intune and ActiveSync 2 15
EXCH2013 - publicFolders 4 47
NLB for exchange 2 47
This process describes the steps required to Import and Export data from and to .pst files using Exchange 2010. We can use these steps to export data from a user to a .pst file, import data back to the same or a different user, or even import data t…
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 Address List 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 Organization >> Ad…
The video tutorial explains the basics of the Exchange server Database Availability groups. The components of this video include: 1. Automatic Failover 2. Failover Clustering 3. Active Manager

732 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