- Plesk Onyx for Linux
- It is not possible to login into RoundCube webmail with the following message:
CONFIG_TEXT: Connection to storage server failed
CONFIG_TEXT: Error connecting to mail server
Unable to send a message using Roundcube webmail with the following error:
PLESK_INFO: SMTP Error (-1): Connection to server failed
- The entries like below can be found in
CONFIG_TEXT: admin dovecot: imap-login: Disconnected (no auth attempts in 0 secs): user=<>, rip=::1, lip=::1, TLS handshaking: SSL_accept() failed: error:14094415:SSL routines:SSL3_READ_BYTES:sslv3 alert certificate expired: SSL alert number 45, session=
- The output of the command below contains the following line in the end:
# openssl s_client -showcerts -connect mail_server_IP:465
Verify return code: 10 (certificate has expired)
warning: TLS library problem: error:14094415:SSL routines:SSL3_READ_BYTES:sslv3 alert certificate expired:s3_pkt.c:1275:SSL alert number 45:
Mail server SSL/TLS certificate is expired.
Login to Plesk GUI and renew the certificate:
If Let's Encrypt certificate is used, follow the instructions from the article How to secure mail server with Let's Encrypt certificate?
If a purchased certificate is used, follow the instructions from the article How to secure a mail server with an SSL certificate?