SMTP Error: Failed to check STMP: Connection error: Connection error: tls handshake eof about rustdesk-server-pro HOT 12 CLOSED

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what email system are you trying to make it work with? need more info

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We are using Microsoft Exchange. We already use it with other Linux Servers on Port 587. It works. Ports are open on each side. I did a openssl s_client -starttls smtp mail.company.com:587 from the Rustdesk Server and it returns successfully our Certificate as expected.

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do you have any errors in event viewer on your exchange server?

@rustdesk is it possible to allow auth without a password like this #37 (comment)

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Nope, because the Rustdesk Server is not even trying to establish a connection to the exchange. Our firewall isn't showing any try.

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In the meantime i figured out, that there is a bug in NGINX Version 1.18. This version is delivered natively with Ubuntu Server 22.04 still, even there is newer versions of NGINX. The problem is, when i upgrade NGINX to 1.24 for example, it's not working anymore and the Webinterface isn't available anymore. I also tried to install NGINX beforehand and then run the installer script but then i have an half empty rustdesk.conf file. Seems like Rustdesk installation script is not made for other version then 1.18.....

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shall check the upgrade to newer nginx and fix it

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New nginx version 1.24 still not working. I manually updated the package and its dependencies and copied all settings. Still the same error.

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yes looking

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New nginx version 1.24 still not working. I manually updated the package and its dependencies and copied all settings. Still the same error.

The new version of nginx.conf changes settings, this needs replaced with the old version, or at least this line needs added in include /etc/nginx/sites-enabled/*;. I have just upgraded on debian 12 which I already had running, please check on ubuntu

Original nginx.conf

user www-data;
worker_processes auto;
pid /run/nginx.pid;
error_log /var/log/nginx/error.log;
include /etc/nginx/modules-enabled/*.conf;

events {
        worker_connections 768;
        # multi_accept on;
}

http {

        ##
        # Basic Settings
        ##

        sendfile on;
        tcp_nopush on;
        types_hash_max_size 2048;
        # server_tokens off;

        # server_names_hash_bucket_size 64;
        # server_name_in_redirect off;

        include /etc/nginx/mime.types;
        default_type application/octet-stream;

        ##
        # SSL Settings
        ##

        ssl_protocols TLSv1 TLSv1.1 TLSv1.2 TLSv1.3; # Dropping SSLv3, ref: POODLE
        ssl_prefer_server_ciphers on;

        ##
        # Logging Settings
        ##

        access_log /var/log/nginx/access.log;

        ##
        # Gzip Settings
        ##

        gzip on;

        # gzip_vary on;
        # gzip_proxied any;
        # gzip_comp_level 6;
        # gzip_buffers 16 8k;
        # gzip_http_version 1.1;
        # gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;

        ##
        # Virtual Host Configs
        ##

        include /etc/nginx/conf.d/*.conf;
        include /etc/nginx/sites-enabled/*;
}


#mail {
#       # See sample authentication script at:
#       # http://wiki.nginx.org/ImapAuthenticateWithApachePhpScript
#
#       # auth_http localhost/auth.php;
#       # pop3_capabilities "TOP" "USER";
#       # imap_capabilities "IMAP4rev1" "UIDPLUS";
#
#       server {
#               listen     localhost:110;
#               protocol   pop3;
#               proxy      on;
#       }
#
#       server {
#               listen     localhost:143;
#               protocol   imap;
#               proxy      on;
#       }
#}

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My nginx.conf file already looks like this... only difference is server_tokesn off; is active. In your example there is a # in front....

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We could use Nginx own repos in the installation... Don't know if it would make any difference though.

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