Mailgun doesn't want to work

[jtagcat]

Using docker.

[root@sniboxdemo snibox-docker]# cat .env
# Secrets
SECRET_KEY_BASE=44f431c75e78***88f761eac4828a33

# SSL
FORCE_SSL=false

# Database # also is this self-contained, will it interfere with other containers? is this accessible from www?
DB_NAME=postgres
DB_USER=postgres
DB_PASS=
DB_HOST=database
DB_PORT=5432

# Mailgun. Required by 'Reset password feature'. Feel free to start without this setup.
MAILGUN_SMTP_PORT=587
MAILGUN_SMTP_SERVER=smtp.eu.mailgun.org
MAILGUN_SMTP_LOGIN=snibox@mail.c7.ee
MAILGUN_SMTP_PASSWORD=a*****523
MAILGUN_API_KEY=fd****79c2d
MAILGUN_DOMAIN=mail.c7.ee
MAILGUN_PUBLIC_KEY=pubkey-1*****660b7