1 Topic by Jochen

  • Jochen
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Topic: POP3 not working

==== Required information ====
- iRedMail version: 0.8.6
- Store mail accounts in which backend (LDAP/MySQL/PGSQL): MySQL
- Linux/BSD distribution name and version: debian 7
- Related log if you're reporting an issue:
====

Hi,

sorry, if this has been asked before... is there a way to search this forum???

I am running iredMail and the admin for some weeks now, all is well, now I am migrating the first customer... they have an MS Exchange-Box fetching the Mail by POP3 and it does not work.
- Accounts are working on roundcube and IMAP
- I cannot telnet pop3 port like
  telnet MYHOST 110

->
Trying MYIP...
telnet: connect to address MYIP: Host is down
telnet: Unable to connect to remote host

For dovecot I found the following page http://wiki2.dovecot.org/SSL/DovecotConfiguration offering a test command:

openssl s_client -connect MYHOST:pop3s
That gives:
connect: Host is down
connect:errno=64

I have the feeling that the pop3 deamon is not runing at all... but with a POP3checker I get the error mentioned here:
http://www.iredmail.org/wiki/index.php? … t.STARTTLS

Plaintext authentication disallowed on non-secure (SSL/TLS) connections

What shall/can I do???

I did not do anything to the dovecot config ;-)

----

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2 Reply by ZhangHuangbin

  • ZhangHuangbin
  • ZhangHuangbin
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Re: POP3 not working

Jochen wrote:

sorry, if this has been asked before... is there a way to search this forum???

Search "search" string in any forum page, there's a "Search" in navigation bar.

iRedMail enables POP3 over TLS (port 995) for secure connection by default, not POP3 (110). So you should update mail client applications (Outlook/Thunderbird/etc). this is recommended.

Or, a not recommend way: allow plain text authentication on port 110 by following the tutorial you already found:
http://www.iredmail.org/wiki/index.php? … t.STARTTLS

Again, if you're migrating old server, or deploying a new server, it's the best opportunity to force all users to use secure connections.

3 Reply by Jochen

  • Jochen
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Re: POP3 not working

ZhangHuangbin wrote:

iRedMail enables POP3 over TLS (port 995) for secure connection by default, not POP3 (110). So you should update mail client applications (Outlook/Thunderbird/etc). this is recommended.

okay, thx. So POP3 with STARTTLS over Port 110 is not an option without risking security?


ZhangHuangbin wrote:

Or, a not recommend way: allow plain text authentication on port 110 by following the tutorial you already found:
http://www.iredmail.org/wiki/index.php? … t.STARTTLS

Again, if you're migrating old server, or deploying a new server, it's the best opportunity to force all users to use secure connections.

I don't want that, but on the other hand I need to get the guys going. I was not able to conenct to the server by myself. Is there a HOWTO available to connect Exchange to iRedMail/Dovecot?

4 Reply by Jochen

  • Jochen
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Re: POP3 not working

Is there a way to check that the server is running okay? Is the check I posted from dovecot wiki the wrong way to go?

5 Reply by Jochen

  • Jochen
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Re: POP3 not working

Hi again...

is the text in this wiki-page up2date then?
http://www.iredmail.org/wiki/index.php? … r.iRedMail

It tells you how to configure Thunderbird with POP3, Port 110 and starttls...

6 Reply by ZhangHuangbin

  • ZhangHuangbin
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Re: POP3 not working

Oops, my mistake in this forum post (what a chaos in my brain ...). Please follow our wiki tutorial instead: port 110 with STARTTLS.

7 Reply by Jochen

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Re: POP3 not working

I did follow that before posting and it did not work... and I coud not telnet to port 110 and I followed the mentioned HowTo from Dovecot to check a POP3/Starttls setup and it did not work.

Basically, I am back again and my starting point :-(

8 Reply by ZhangHuangbin

  • ZhangHuangbin
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Re: POP3 not working

Could you please capture some screenshots of the POP3 settings in your mail client application?