So if I just have this configuration in the advanced tab I get a 502 bad gateway but my host at least shows online in Nginx.

location /Microsoft-Server-ActiveSync {
proxy_pass http://127.0.0.1:8080/Microsoft-Server-ActiveSync;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
proxy_connect_timeout 75;
proxy_send_timeout 3650;
proxy_read_timeout 3650;
proxy_buffers 64 512k; # Needed since the 2022-04 Update for SOGo
client_body_buffer_size 512k;
client_max_body_size 0;
}

location / {
proxy_pass http://127.0.0.1:8080/;
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header X-Forwarded-Proto $scheme;
client_max_body_size 0;

The following Proxy Buffers has to be set if you want to use SOGo after the 2022-04 (April 2022) Update

Otherwise a Login will fail like this: mailcow/mailcow-dockerized4537

proxy_buffer_size 128k;
proxy_buffers 64 512k;
proxy_busy_buffers_size 512k;
}

But if I added the full recommended Advanced config the host shows offline and I get a SSL_ERROR_UNRECOGNIZED_NAME_ALERT on the web page.

If I go to the IP and port of the mail server both HTTP (8080) and HTTPS (8443) it works and the SSL certificate shows correctly as valid and issued to the mail server domain name. I copied the SSL cert and key from Nginx Proxy into the Mailcow SSL folder so it is ready the SSL certificate correct.

There is a Logs folder in the nginx/data folder but all the files in there are blank. The audit logs page on the Nginx dashboard is just showing when I have made a change to a host.

even adding just this section in causes the host to go offline.

server {
listen 80 default_server;
listen [::]:80 default_server;
server_name CHANGE_TO_MAILCOW_HOSTNAME autodiscover.* autoconfig.;
return 301 https://$host$request_uri;
}

DocFraggle Rightio, lots of progress but still not quite right.

To solve the 502 gateway error because I had not put my proxy network in the Mailcow docker-compose file as some people recommended/suggested I change the HTTP and HTTPS port binds in the mailcow.conf file to the local IP address of my docker server (192.168.50.250).

I also configured on the Nginx reverse proxy Forward Hostname/IP to also be the local IP address of the Docker server and lastly on the advanced configuration to also use the local IP instead of the loopback address.

This bit here is where it all goes downhill and goes offline.

server {
listen 80 default_server;
listen [::]:80 default_server;
server_name CHANGE_TO_MAILCOW_HOSTNAME autodiscover.* autoconfig.;
return 301 https://$host$request_uri;
}
server {
listen 443 ssl http2;
listen [::]:443 ssl http2;
server_name CHANGE_TO_MAILCOW_HOSTNAME autodiscover. autoconfig.*;

ssl_certificate MAILCOW_PATH/data/assets/ssl/cert.pem;
ssl_certificate_key MAILCOW_PATH/data/assets/ssl/key.pem;
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:50m;
ssl_session_tickets off;

See Mozilla SSL Configuration Generator

ssl-config.mozilla.org

Mozilla SSL Configuration Generator

for the latest ssl settings recommendations

An example config is given below

ssl_protocols TLSv1.2;
ssl_ciphers HIGH:!aNULL:!MD5:!SHA1:!kRSA;
ssl_prefer_server_ciphers off;

I even tried modify the one from here but still failed: Mozilla SSL Configuration Generator

ssl-config.mozilla.org

Mozilla SSL Configuration Generator

server {
listen 80 default_server;
listen [::]:80 default_server;

location / {
    return 301 https://$host$request_uri;
}

}

server {
listen 443 ssl http2;
listen [::]:443 ssl http2;

ssl_certificate /path/to/signed_cert_plus_intermediates;
ssl_certificate_key /path/to/private_key;
ssl_session_timeout 1d;
ssl_session_cache shared:MozSSL:10m;  # about 40000 sessions
ssl_session_tickets off;

# curl https://ssl-config.mozilla.org/ffdhe2048.txt > /path/to/dhparam
ssl_dhparam /path/to/dhparam;

# intermediate configuration
ssl_protocols TLSv1.2 TLSv1.3;
ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305;
ssl_prefer_server_ciphers off;

# HSTS (ngx_http_headers_module is required) (63072000 seconds)
add_header Strict-Transport-Security "max-age=63072000" always;

# OCSP stapling
ssl_stapling on;
ssl_stapling_verify on;

# verify chain of trust of OCSP response using Root CA and Intermediate certs
ssl_trusted_certificate /path/to/root_CA_cert_plus_intermediates;

# replace with the IP address of your resolver
resolver 127.0.0.1;

}

DocFraggle I work in IT mate, stuff like that is never a dumb question to ask lol

so the full location from my home directory is docker_volumes/mailcow-dockerized/data/assets/ssl/cert.pem and I have manually copied the cert.pem and key.pem from Nginx to this location. I have disabled Mailcow from being able to get its own SSL certificate in the mailcow.conf file by changing this line SKIP_LETS_ENCRYPT=y

I have got autodiscovery working (mostly) exchange activesync works but IMAPS does not work (I have port 25, 587,465 993 and 4190 ported forward to my docker server for Mailcow plus 80 and 443 for Nginx itself.

The bit I am unsure of for that section is the Mailcow path itself, do I start its location from the home directory or from the Nginx folder or the Mailcow folder.

I added mail.domain.com autodiscover.domain.com and autoconfig.domain.com to the advanced configuration, the let’s encrypt SSL certificate, and to the proxy host domains section (I am a HUGE dumbarse and should have realised adding all 3 subdomains was necessary…)

Rightio, I am making good progress I believe.

I solved the IMAPS issue, I had the port forward wrong, this is all I will say on this matter…..

When I put in the full, filled-out version of the Nginx advanced configuration for Mailcow it knocks it offline as we all know but what I didn’t know is you can hover your mouse over the offline area and it will give you a sippet of what is causing the error.

Doing a bit more searching I am still stumped on how to fix it though.

esackbauer Ah is that how you do it, thank you. Sorry I am not really a forum type person most of the time I just search the entire internet in silence.

So Ansible does it automatically or does it require manual intervention?

I will look into it as I would like to do a complete guide to help others who don’t quite understand just like I was.