Question

Error "Connection to IMAP server failed" with VirtualMin

  • Posted September 7, 2013

Hi all,

I installed VirtualMin on a VPS running Ubuntu. Then I installed RoundCube using script on VirtualMin. I created a new one Email account (Edit Users -> Add a user to this server) and enabled IMAP client (Enable mail client autoconfiguration? = Yes).

But when I log into email accounts with RoundCube the error: “Connection to IMAP server failed”. I’ve used Thunderbird but it also connects error.

How fix it? Please help me.

Thanks, Thanh

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Solved the error in the Postfix too by learning how to configure postfix.cf by watching this video:- https://www.youtube.com/watch?v=9BjC_y_zkm8

Before installing SSL all my emails sent to Google had a “Open Red Lock Shaped Icon” warning with them. After installing an SSL certificate and following your advice all my emails are clean. Now I have a my own mass mailing server with no restrictions at all.

Thanks @Pantcho

Mannnnnnnnnnnnn

I had this problem for over a month. Would try to find solutions every now and then. And after a more than a month it gets solved by this advice. I am so happy that I too don’t care if its insecure. At least I am a step further.

Now am getting a another error while sending an email:- “SMTP Error (-1): Connection to server failed.”

Hope not another month goes by now…

Try to “Dovecot IMAP/POP3 Server” section clicking on “Networking and Protocols” and on the right switch off the “Accept SSL connections?”

i don’t know how much unsecure this is but for me it worked.


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Hi, <br> <br>Can you describe it more clearly is not? How can I check it? <br>In the Webmin menu is “Dovecot IMAP/POP3 Server” and “Postfix Mail Server”. <br> <br>Thanks, <br>Thanh

Check Webmin to make sure you have an IMAP module installed.