Is self-signed SSL not compatible with mailclients?

Hi experts, We recently acquired a cPanel hosting from GoDaddy. I'm currently testing the emails and sending and receiving through the Webmail. The problem is when I tried adding the account in the thunderbird mailclient.


2020-02-19 08:38:54    mail.setup    INFO    Initializing setup wizard
2020-02-19 08:38:54    mail.setup    INFO    Email account setup dialog loaded.
2020-02-19 08:38:54    mail.setup    INFO    switching to UI mode start
2020-02-19 08:39:15    mail.setup    INFO    findConfig()
2020-02-19 08:39:15    mail.setup    INFO    switching to UI mode find-config
2020-02-19 08:39:15    mail.setup    INFO    Requesting 
2020-02-19 08:39:15    mail.setup    INFO    Requesting 
2020-02-19 08:39:15    mail.setup    INFO    Requesting 
2020-02-19 08:39:15    mail.setup    INFO    Requesting 
2020-02-19 08:39:15    mail.setup    INFO    Requesting 
2020-02-19 08:39:15    mail.setup    INFO    Requesting 
2020-02-19 08:39:15    mail.setup    INFO    Requesting 
2020-02-19 08:39:15    mail.setup    INFO    call 0 took 14ms and failed with local file not found
2020-02-19 08:39:15    mail.setup    INFO    call 0 took 31ms and failed with 0 unknown error, probably no host connection at 
2020-02-19 08:39:15    mail.setup    INFO    call 0 took 31ms and failed with 0 unknown error, probably no host connection at 
2020-02-19 08:39:15    mail.setup    INFO    call 2 took 30ms and failed with 0 unknown error, probably no host connection at 
2020-02-19 08:39:15    mail.setup    INFO    call 3 took 392ms and failed with 404 Not Found
2020-02-19 08:39:16    mail.setup    INFO    call 2 took 689ms and failed with 404 Not Found at 
2020-02-19 08:39:16    mail.setup    INFO    call 1 took 1178ms and failed with 0 unknown error, probably no host connection at 
2020-02-19 08:39:16    mail.setup    INFO    call 4 took 1180ms and failed with 0 unknown error, probably no host connection
2020-02-19 08:39:18    mail.setup    INFO    call 1 took 3308ms and failed with 404 Not Found at 
2020-02-19 08:39:18    mail.setup    INFO    call 1 took 3309ms and failed with 0 unknown error, probably no host connection
2020-02-19 08:39:18    mail.setup    WARN    spinner start looking_up_settings_guess
2020-02-19 08:39:18    mail.setup    INFO    status msg: Looking up configuration: Trying common server names
2020-02-19 08:39:18    mail.setup    INFO    progress callback host imap.domain.com.ph port 143 type imap
2020-02-19 08:39:18    mail.setup    INFO    progress callback host smtp.domain.com.ph port 587 type smtp
2020-02-19 08:39:18    mail.setup    INFO    progress callback host imap.domain.com.ph port 143 type imap
2020-02-19 08:39:18    mail.setup    INFO    progress callback host pop3.domain.com.ph port 110 type pop3
2020-02-19 08:39:18    mail.setup    INFO    progress callback host imap.domain.com.ph port 143 type imap
2020-02-19 08:39:18    mail.setup    INFO    progress callback host pop.domain.com.ph port 110 type pop3
2020-02-19 08:39:18    mail.setup    INFO    progress callback host pop3.domain.com.ph port 110 type pop3
2020-02-19 08:39:18    mail.setup    INFO    progress callback host pop.domain.com.ph port 110 type pop3
2020-02-19 08:39:18    mail.setup    INFO    progress callback host smtp.domain.com.ph port 587 type smtp
2020-02-19 08:39:18    mail.setup    INFO    progress callback host smtp.domain.com.ph port 25 type smtp
2020-02-19 08:39:18    mail.setup    INFO    progress callback host smtp.domain.com.ph port 587 type smtp
2020-02-19 08:39:18    mail.setup    INFO    progress callback host smtp.domain.com.ph port 25 type smtp
2020-02-19 08:39:19    mail.setup    INFO    progress callback host mail.domain.com.ph port 143 type imap
2020-02-19 08:39:19    mail.setup    INFO    progress callback host mail.domain.com.ph port 110 type pop3
2020-02-19 08:39:19    mail.setup    INFO    progress callback host domain.com.ph port 143 type imap
2020-02-19 08:39:19    mail.setup    INFO    CHOOSING imap mail.domain.com.ph:143, auth method 3, SSL 3
2020-02-19 08:39:19    mail.setup    INFO    CHOOSING pop3 mail.domain.com.ph:110, auth method 3, SSL 3
2020-02-19 08:39:19    mail.setup    INFO    progress callback host mail.domain.com.ph port 143 type imap
2020-02-19 08:39:30    mail.setup    INFO    guessConfig failed: Can't find a server
2020-02-19 08:39:30    mail.setup    WARN    status error failed_to_find_settings
2020-02-19 08:39:30    mail.setup    INFO    status msg: Thunderbird failed to find the settings for your email account.
2020-02-19 08:39:30    mail.setup    INFO    manual edit
2020-02-19 08:39:30    mail.setup    WARN    ReferenceError: kDebug is not defined
2020-02-19 08:39:30    mail.setup    INFO    switching to UI mode manual-edit-have-hostname
2020-02-19 08:39:30    mail.setup    WARN    ReferenceError: kDebug is not defined

martin MHC

February 20, 2020 08:48

I always manually set up mail clients. Are you using the details as provided on the CPanel Email's set up page? Port 143 does not appear to be a standard. My default Email ports are 465 (SMTP) and 993 (IMAP) -- you should manually try these maybe. Self signed certificates will never auto-register with Thunderbird or any other 3rd party client because they are, er, self signed, so there's no actual Trust. I have found Thunderbird to be one of the easiest mail clients to set up with CPanel emails.

cPanelLauren

February 21, 2020 00:14

Hello, 1. it looks like you're trying to use AutoConfigure but may not have it set up. Information on this can be found here: AutoConfig and Autodiscover | cPanel & WHM Documentation 2. The inbound/outbound mailserver should be mail.domain.tld for both not pop/smtp - unless you have explicitly set up pop.domain.tld and smtp.domain.tld 3. As @martin MHC noted the autoconfiguration script is super handy and the details provided on the email setup page tell you exactly what to enter in. Thanks!

Is self-signed SSL not compatible with mailclients?

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