Context at https://meta.discourse.org/t/-/193664/4?u=falco
Co-authored-by: Jay Pfaffman <jay@literatecomputing.com>
## to use the same domain as the forum itself here.
MAIL_DOMAIN: discourse.example.com
# uncomment these (and the volume below!) to support TLS
-# POSTCONF_smtpd_tls_key_file: /letsencrypt/discourse.example.com/prop.ltcmp.net.key
+# POSTCONF_smtpd_tls_key_file: /letsencrypt/discourse.example.com/discourse.example.com.key
# POSTCONF_smtpd_tls_cert_file: /letsencrypt/discourse.example.com/fullchain.cer
# POSTCONF_smtpd_tls_security_level: may