IMAP connect problem - Mail Server

aaP_kontakt10

Hi,
I have a problem with connect to mail account in Gmail or Mail (iOS) apps.

Error log:
2024-12-16T15:07:51.787011+01:00 retest dovecot: imap-login: Error: Failed to initialize SSL server context: Can't load SSL certificate (ssl_cert setting): The certificate is empty: user=<>, rip=91.224.185.108, lip=152.53.133.202, session=<xzzItGMpatZb4Lls>

/etc/dovecot/conf.d/10-ssl.conf
[https://pastecode.io/s/jfq7yesa](https://)

/etc/dovecot/dovecot.conf
[https://pastecode.io/s/qk48fn8a](https://)

A Let's Encrypt certificate is assigned to the domain.
All DNSs are set up properly.

I can log in to the RoundCube on the server without any problems and send and receive emails.

I have tried many solutions, but none of them work.

I use:
Debian GNU/Linux 12 x86_64(Py3.12.3)
OpenLiteSpeed
MariaDB

Please help me resolve this problem.
Thank you!

aaPanel_Kern

Hello, is it possible to try to save the SSL certificate once in the SSL interface of the mail server?

aaP_kontakt10

The SSL is added into mail server, but that doesn't solve the problem

aaPanel_Kern

At the same time, check the postfix configuration, which can be viewed in the server status
"mail.135mailtest.com" is replaced with your domain name
Put:
smtpd_tls_chain_files=/etc/ssl/private/ssl-cert-snakeoil.key,/etc/ssl/certs/ssl-cert-snakeoil.pem
Change to:
smtpd_tls_chain_files = /www/server/panel/plugin/mail_sys/cert/135mailtest.com/privkey.pem,/www/server/panel/plugin/mail_sys/cert/135mailtest.com/fullchain.pem
Note to replace 135mailtest.com with your domain name.
Also check /www/server/panel/plugin/mail_sys/cert/135mailtest.com/ for privkey.pem and fullchain.pem files

You can use this command to check whether the correct SSL is configured
openssl s_client -connect mail.135mailtest.com:587 -starttls smtp
or
openssl s_client -connect mail.135mailtest.com:465

If the display is not OK, try to save the SSL certificate again, or please re-apply for SSL

aaP_kontakt10