dovecot - Mar 2023 - Error: Can't load SSL certificate

I try to logon to map using dovecot with SSL required. I get following entries
in the log:Mar 20 13:49:30 auth: Debug: Loading modules from directory:
/opt/lib/dovecot/modules/auth
Mar 20 13:49:30 auth: Debug: Module loaded:
/opt/lib/dovecot/modules/auth/lib20_auth_var_expand_crypt.so
Mar 20 13:49:30 auth: Debug: Read auth token secret from
/opt/var/run/dovecot/auth-token-secret.dat
Mar 20 13:49:30 auth: Debug: passwd-file /opt/etc/dovecot/userdb:Read 1 users in
0 secs
Mar 20 13:49:30 auth: Debug: auth client connected (pid=26120)
Mar 20 13:49:30 imap-login: Error: Failed to initialize SSL server context:
Can't load SSL certificate (ssl_cert setting): error:12800067:DSO support
routines::could not load the shared library: filename(libz.so): libz.so: cannot
open shared object file: No such file or directory, error:12800067:DSO support
routines::could not load the shared library: user=<>, rip=192.168.117.5,
lip=192.168.117.2, session=<eX3e+Uv3k8DAqHUF>
Mar 20 13:49:30 imap-login: Info: Disconnected: TLS initialization failed. (no
auth attempts in 0 secs): user=<>, rip=192.168.117.5, lip=192.168.117.2,
session=<eX3e+Uv3k8DAqHUF

The library files exist in the include directory
[/opt] # find . -name libz* -print
./lib/opkg/info/libzstd.control
./lib/opkg/info/libzstd.list
./lib/libz.so
./lib/libz.so.1
./lib/libz.so.1.2.13
./lib/libzstd.so
./lib/libzstd.so.1
./lib/libzstd.so.1.5.2
./lib/libz.a

Have the dovecot settings the same on other servers and it works, Dovecot is
v2.3.18, installed from Entware for QNAP. Any help appreciated.
Horst 


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My suggests to look for:

1. Are your other servers setups installed from "Entware for QNAP"
too?
2. Do your other servers have libz.so* located under /opt/lib/ too?
3. Did you compare owner and permissions of every libz.so* file between 
servers too?
4. Are other servers running Dovecot with same user account?


El 20/3/23 a les 4:01, Horst Simon ha escrit:
> I try to logon to map using dovecot with SSL required. I get following 
> entries in the log:Mar 20 13:49:30 auth: Debug: Loading modules from 
> directory: /opt/lib/dovecot/modules/auth
> Mar 20 13:49:30 auth: Debug: Module loaded: 
> /opt/lib/dovecot/modules/auth/lib20_auth_var_expand_crypt.so
> Mar 20 13:49:30 auth: Debug: Read auth token secret from 
> /opt/var/run/dovecot/auth-token-secret.dat
> Mar 20 13:49:30 auth: Debug: passwd-file /opt/etc/dovecot/userdb:Read 1 
> users in 0 secs
> Mar 20 13:49:30 auth: Debug: auth client connected (pid=26120)
> Mar 20 13:49:30 imap-login: Error: Failed to initialize SSL server 
> context: Can't load SSL certificate (ssl_cert setting): 
> error:12800067:DSO support routines::could not load the shared library: 
> filename(libz.so): libz.so: cannot open shared object file: No such file 
> or directory, error:12800067:DSO support routines::could not load the 
> shared library: user=<>, rip=192.168.117.5, lip=192.168.117.2, 
> session=<eX3e+Uv3k8DAqHUF>
> Mar 20 13:49:30 imap-login: Info: Disconnected: TLS initialization 
> failed. (no auth attempts in 0 secs): user=<>, rip=192.168.117.5, 
> lip=192.168.117.2, session=<eX3e+Uv3k8DAqHUF
> 
> The library files exist in the include directory
> [/opt] # find . -name libz* -print
> 
> ./lib/opkg/info/libzstd.control
> 
> ./lib/opkg/info/libzstd.list
> 
> ./lib/libz.so
> 
> ./lib/libz.so.1
> 
> ./lib/libz.so.1.2.13
> 
> ./lib/libzstd.so
> 
> ./lib/libzstd.so.1
> 
> ./lib/libzstd.so.1.5.2
> 
> ./lib/libz.a
> 
> 
> Have the dovecot settings the same on other servers and it works, 
> Dovecot is v2.3.18, installed from Entware for QNAP. Any help?appreciated.
> 
> Horst
> 
> 
> 
-- 

Narcis Garcia

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