peertube_1 | [example.com:443] 2019-11-16 04:26:06.083 info: User password: abcdefghijklmnop
```
+### Obtaining Your Automatically Generated DKIM DNS TXT Record
+[DKIM](https://en.wikipedia.org/wiki/DomainKeys_Identified_Mail) signature sending and RSA keys generation are enabled by the default Postfix image `mwader/postfix-relay` with [OpenDKIM](http://www.opendkim.org/).
+Run `cat ./docker-volume/opendkim/keys/*/*.txt` to display your DKIM DNS TXT Record containing the public key to configure to your domain :
+```BASH
+user@s:~/peertube|master⚡ ⇒ cat ./docker-volume/opendkim/keys/*/*.txt
+
+peertube._domainkey.mydomain.tld. IN TXT ( "v=DKIM1; h=sha256; k=rsa; "
+ "p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA0Dx7wLGPFVaxVQ4TGym/eF89aQ8oMxS9v5BCc26Hij91t2Ci8Fl12DHNVqZoIPGm+9tTIoDVDFEFrlPhMOZl8i4jU9pcFjjaIISaV2+qTa8uV1j3MyByogG8pu4o5Ill7zaySYFsYB++cHJ9pjbFSC42dddCYMfuVgrBsLNrvEi3dLDMjJF5l92Uu8YeswFe26PuHX3Avr261n"
+ "j5joTnYwat4387VEUyGUnZ0aZxCERi+ndXv2/wMJ0tizq+a9+EgqIb+7lkUc2XciQPNuTujM25GhrQBEKznvHyPA6fHsFheymOuB763QpkmnQQLCxyLygAY9mE/5RY+5Q6J9oDOQIDAQAB" ) ; ----- DKIM key peertube for mydomain.tld
+```
+
### What now?
See the production guide ["What now" section](/support/doc/production.md#what-now).
PEERTUBE_SMTP_DISABLE_STARTTLS=false
PEERTUBE_ADMIN_EMAIL=<MY EMAIL ADDRESS>
POSTFIX_myhostname=<MY DOMAIN>
+# If you need to generate a list of sub/DOMAIN keys
+# pass them as a whitespace separated string <DOMAIN>=<selector>
+OPENDKIM_DOMAINS=<MY DOMAIN>=peertube
TRAEFIK_ACME_EMAIL=<MY EMAIL ADDRESS>
# If you need to obtain ACME certificates for more than one DOMAIN
# pass them as a comma separated string