Hi All,
I am searching in the forum the whole day and don’t get any further with my issue 
I am running NC 24.0.3 in a pretty much standard Docker configuration:
version: '3.1'
services:
redis:
image: redis:alpine
restart: always
volumes:
- ./redis:/data
networks:
- proxy-tier
proxy:
image: jwilder/nginx-proxy
ports:
- 192.168.178.3:80:80
- 192.168.178.3:443:443
volumes:
- ./proxy/conf.d:/etc/nginx/conf.d
- ./proxy/vhost.d:/etc/nginx/vhost.d
- ./proxy/html:/usr/share/nginx/html
- ./proxy/certs:/etc/nginx/certs:ro
- /var/run/docker.sock:/tmp/docker.sock:ro
networks:
- proxy-tier
restart: always
letsencrypt-companion:
image: nginxproxy/acme-companion
volumes_from:
- proxy
volumes:
#- ./proxy/conf.d:/etc/nginx/conf.d
#- ./proxy/vhost.d:/etc/nginx/vhost.d
#- ./proxy/html:/usr/share/nginx/html
- ./proxy/acme:/etc/acme.sh
- /var/run/docker.sock:/var/run/docker.sock:ro
- ./proxy/certs:/etc/nginx/certs:rw
environment:
- DEFAULT_EMAIL=admin@graf-online.me
restart: always
web:
image: nginx
links:
- app
volumes:
- ./web/nginx.conf:/etc/nginx/nginx.conf
- ./www:/var/www/html
- ./nextcloud/apps:/var/www/html/apps
- ./nextcloud/custom_apps:/var/www/html/custom_apps
- ./nextcloud/config:/var/www/html/config
- /share/Nextcloud-DATA/NC_DATA:/var/www/html/data
environment:
- VIRTUAL_HOST=
- VIRTUAL_NETWORK=nginx-proxy-prod
- VIRTUAL_PORT=80
- LETSENCRYPT_HOST=
- LETSENCRYPT_EMAIL=
- LC_ALL=C.UTF-8
- LANG=C
# ports:
# - 192.168.178.3:81:80
links:
- "clamav:av"
networks:
- proxy-tier
restart: always
app:
#image: nextcloud:fpm
build: ./nextcloud
volumes:
- ./www:/var/www/html
- ./nextcloud/apps:/var/www/html/apps
- ./nextcloud/custom_apps:/var/www/html/custom_apps
- ./nextcloud/config:/var/www/html/config
- ./nextcloud/php_config:/usr/local/etc/php/conf.d
- /share/Nextcloud-DATA/NC_DATA:/var/www/html/data
networks:
- proxy-tier
restart: always
environment:
- NEXTCLOUD_ADMIN_USER_FILE=/run/secrets/NEXTCLOUD_ADMIN_USER
- NEXTCLOUD_ADMIN_PASSWORD_FILE=/run/secrets/NEXTCLOUD_ADMIN_PASSWORD
- MYSQL_PASSWORD_FILE=/run/secrets/MYSQL_PASSWORD
- MYSQL_DATABASE_FILE=/run/secrets/MYSQL_DATABASE
- MYSQL_USER_FILE=/run/secrets/MYSQL_USER
- MYSQL_HOST=
- SMTP_HOST=
- SMTP_SECURE=tls
- SMTP_PORT=587
- SMTP_AUTHTYPE=LOGIN
- SMTP_NAME=@
- SMTP_PASSWORD_FILE=/run/secrets/SMTP_PASSWORD
- MAIL_FROM_ADDRESS=
- MAIL_DOMAIN=
- LC_ALL=C.UTF-8
- LANG=C
- REDIS_HOST=redis
links:
- "clamav:av"
depends_on:
- redis
secrets:
- NEXTCLOUD_ADMIN_USER
- NEXTCLOUD_ADMIN_PASSWORD
- MYSQL_PASSWORD
- MYSQL_DATABASE
- MYSQL_USER
- SMTP_PASSWORD
cron:
image: nextcloud:fpm
restart: always
volumes:
- ./www:/var/www/html
- ./nextcloud/apps:/var/www/html/apps
- ./nextcloud/custom_apps:/var/www/html/custom_apps
- ./nextcloud/config:/var/www/html/config
- /share/Nextcloud-DATA/NC_DATA:/var/www/html/data
entrypoint: /cron.sh
environment:
- REDIS_HOST=redis
- SMTP_HOST=
- SMTP_SECURE=tls
- SMTP_PORT=587
- SMTP_AUTHTYPE=LOGIN
- SMTP_NAME=
- SMTP_PASSWORD_FILE=/run/secrets/SMTP_PASSWORD
depends_on:
- redis
networks:
- proxy-tier
secrets:
- SMTP_PASSWORD
clamav:
image: mkodockx/docker-clamav:alpine
restart: always
volumes:
- ./clamav:/var/lib/clamav
networks:
- proxy-tier
networks:
proxy-tier:
external:
name: nginx-proxy-prod
secrets:
NEXTCLOUD_ADMIN_USER:
NEXTCLOUD_ADMIN_PASSWORD:
MYSQL_PASSWORD:
MYSQL_DATABASE:
MYSQL_USER:
SMTP_PASSWORD:
OK, probably not that standard - but my problems are not related to the docker compose file.
My problem is that I am not able to configure my smtp server correctly.
After turning smtp logging on I saw the following errormessage in the logs:
Swift_TransportException: Connection could not be established with host 127.0.0.1 :stream_socket_client(): Unable to connect to 127.0.0.1:25 (Connection refused) Log data: ++ Starting Swift_SmtpTransport !! Connection could not be established with host 127.0.0.1 :stream_socket_client(): Unable to connect to 127.0.0.1:25 (Connection refused) (code: 0)
Then I was checking my mail configuration using OCC:
"mail_sendmailmode": "smtp",
"default_phone_region": "DE",
"mail_smtpdebug": true,
"mail_smtpmode": "smtp",
"mail_smtphost": "***REMOVED SENSITIVE VALUE***",
"mail_smtpport": "587",
"mail_smtpsecure": "tls",
"mail_smtpauth": true,
"mail_smtpauthtype": "LOGIN",
"mail_smtpname": "***REMOVED SENSITIVE VALUE***",
"mail_from_address": "***REMOVED SENSITIVE VALUE***",
"mail_domain": "***REMOVED SENSITIVE VALUE***",
"mail_smtppassword": "***REMOVED SENSITIVE VALUE***"
Which hopefully reflects the settings I have done via the environment variables for the container.
However, Swift is trying to connect to localhost:25 even though there is a different server in the config.
Does anyone has an idea where I can look further into that issue to find the root cause?
As a side note - I also tried to configure the smtp server via the GUI and this doesn’t work either.
I also found the older threat about gmail an MFA - but I am running my own SMTP server and this server is definitely running and only requires Username:Password to log in.
Thanks for your help!