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Topics - Zhmak

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Installation and Upgrades / Zentyal 7.1 how to get TLS1.1 back?
« on: October 17, 2023, 07:44:24 am »
Old school Windows XP mail clients like Outlook Express can't connect to server due TLS1.2 as minimal required security level.

Tried to lower minimum TLS level in dovecot in
/etc/dovecot/conf.d/10-ssl.conf by
Code: [Select]
ssl_min_protocol = TLSv1.1
also set in /etc/ssl/
Code: [Select]
[ default_conf ]
ssl_conf = ssl_sect

[ ssl_sect ]
system_default = system_default_sect

[ system_default_sect ]
MinProtocol = TLSv1
# Be less secure when negotiating ciphers, verifying certificates, etc.

After restarting dovecot still got ssl error

Code: [Select]
openssl s_client -connect -tls1_1
4057F8C89C7F0000:error:0A0000BF:SSL routines:tls_setup_handshake:no protocols available:../ssl/statem/statem_lib.c:104:
no peer certificate available
No client certificate CA names sent
SSL handshake has read 0 bytes and written 7 bytes
Verification: OK
New, (NONE), Cipher is (NONE)
Secure Renegotiation IS NOT supported
Compression: NONE
Expansion: NONE
No ALPN negotiated
Early data was not sent
Verify return code: 0 (ok)

When I try to lower TLS at postfix config having same behavior on 465 port.

Is Zentyal has specific TLS settings?

Email and Groupware / Mail alias for multiple external recipients
« on: September 27, 2023, 11:05:18 am »
Zentyal 7.1 installed.

I need to make mail alias like which redirect incoming messages to multiple recipients list like:,,

How can I do this?

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