Resolve "Thunderbird failed to find the settings for your email account"

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This error appears when attempting to set up a new email account in Thunderbird.

 

Let's use an example where Postfix is the SMTP server and Dovecot is the POP3 / IMAP server. 


Server status

On the Postfix/Dovecot server, ensure both Postfix and Dovecot are active and running.

~]# systemctl status postfix
~]# systemctl status dovecot

 


Firewall

On both the email server and client, ensure the appropriate ports (25, 143, 465, 587, 993, 995) are open in iptables or firewalld.

 


ping

On the client, use ping to ensure you can get a response from the mail server.

ping mail.example.com

 


Username

On the email server, ensure john.doe exists in the /etc/passwd file.

 


Password

On the email server, use the passwd command to ensure the password is correct.

 


Interfaces

On the email server, in the /etc/postfix/main.cf file, set inet_interfaces to all, to allow remote hosts to be able to connect to the Postfix server.

inet_interfaces = all

 


SMTPs

If the email server is configured to use SMTPS, ensure you can make a SMTPs connection to the Postfix server.

 


POP3s, IMAPs

If the email server is configured to use POP3S or IMAPS, ensure you can make a POP3s or IMAPs connection to the Dovecot server.



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