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
Solved

Cannot telnet to IMAP server

Posted on 2010-09-22
4
1,350 Views
Last Modified: 2012-05-10
OK, i am deeply confused:

i have set up an exchange server and enabled all ports on firewall. i am trying to set up remote clients with IMAP, i can set up POP3 but not IMAP. Both POP3 and IMAP are set up with same settings but for some reason if i try the following command on a remote machine:

telnet mail.**********.com 110

it lets me through straight away saying  +OK the microsoft exchange POP3 service is ready.

if i try:

telnet mail.**********.com 143 i get the following (after lots of waiting):

...Could not open connection to the host, on port 143: Connect Failed

i can succefully run both these on the server itself using Localhost instead of FQDN, and i can run both on a local machine using the local name of the server instead of the external name.

I have tried disabling Firewall (both ends), Antivirus, and i have double, triple and quadruple checked the firewall settings to make sure port 143 is open and it is.

it seems there is something blocking it but I have no idea what.
I am using exchange 2010 BTW
please help!
0
Comment
Question by:catomax
  • 2
4 Comments
 
LVL 8

Accepted Solution

by:
Mkris9 earned 500 total points
ID: 33736138
what firewall are you using ? have you checked firewall logs for rejected / blocked requests ?
0
 

Author Comment

by:catomax
ID: 33736193
Hi Mkris,
I am using a Sonicwall TZ 100 series firewall, checked the logs and there is nothing about the attempted connections at all.

0
 

Author Closing Comment

by:catomax
ID: 33886811
Thanks for at least showing an interest in the question, managed to solve it eventually.
0
 

Expert Comment

by:attbrowning
ID: 34201040
I am having the same issue with Exchange 2007.. if you could please relate what your solution was I'd appreciate it.
0

Featured Post

Efficient way to get backups off site to Azure

This user guide provides instructions on how to deploy and configure both a StoneFly Scale Out NAS Enterprise Cloud Drive virtual machine and Veeam Cloud Connect in the Microsoft Azure Cloud.

Question has a verified solution.

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

Large Outlook files lead to various unwanted errors and corruption issues. Furthermore, large outlook files can also make Outlook take longer to start-up, search, navigate, and shut-down. So, In this article, i will discuss a method to make your Out…
An analysis of the phishing scam that has been affecting Google users, along with steps to take for protection, as well as what to do if you receive one of the emails.
In this video we show how to create a mailbox database 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 Servers >> Data…
The basic steps you have just learned will be implemented in this video. The basic steps are shown to configure an Exchange DAG in a live working Exchange Server Environment and manage the same (Exchange Server 2010 Software is used in a Windows Ser…

856 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