why thunderbird can not connect my email on vps?

Posted February 21, 2015 2.9k views

I want to build a simple email server on vps with no any ssl certification.
AFTER master the simple email server , I want to build a email server on vps with ssl certification.Here is the way to do it:
apt-get install postfix dovecot-imapd dovecot-pop3d

My domain is , email account is , passwd for the email is “itisatest” , you can ssh the account and test to send and receive emails, it is ok.

joe@born:~$ cat /etc/postfix/
smtpdbanner = $myhostname ESMTP $mailname (Debian/GNU)
biff = no
appenddotmydomain = no
readmedirectory = no
myhostname = born
maps = hash:/etc/aliases
aliasdatabase = hash:/etc/aliases
myorigin = /etc/mailname
mydestination =, born, localhost.localdomain, localhost
relayhost =
mynetworks = [::ffff:]/104 [::1]/128
sizelimit = 0
delimiter = +
inet_interfaces = all

It seems to me that everything is in good order.
But i am confused that the email server can’t connect by thunderbird.

Please try all of them.

How to fix it ?Thank for your answer.

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3 answers

Edit your post and remove your login information.

For the safety as rascul ,i change the password for .Do not try with “itisatest” again .

Have you tried to see if it’s a networking issue between your client and server? What happens when you try to telnet into the IMAP/POP/SMTP ports?