mailcow-dockerized-docs/docs/u_e-postfix-disable_sender_verification.md

This option is not best-practice and should only be implemented when there is no other option available to achieve whatever you are trying to do.

Simply create a file `data/conf/postfix/check_sasl_access` and enter the following content. This user must exist in your installation and needs to authenticate before sending mail.
```
user-to-allow-everything@example.com OK
```

Open `data/conf/postfix/main.cf` and find `smtpd_sender_restrictions`. Prepend `check_sasl_access hash:/opt/postfix/conf/check_sasl_access` like this:
```
smtpd_sender_restrictions = check_sasl_access hash:/opt/postfix/conf/check_sasl_access reject_authenticated_sender_login_mismatch [...]
```

Run postmap on check_sasl_access:

```
docker-compose exec postfix-mailcow postmap /opt/postfix/conf/check_sasl_access
```

Restart the Postfix container.
More spelling and tweaking 2017-05-09 17:43:26 +02:00			`This option is not best-practice and should only be implemented when there is no other option available to achieve whatever you are trying to do.`
Rearrange format, still a wip 2017-05-06 00:22:26 +02:00
			Simply create a file `data/conf/postfix/check_sasl_access` and enter the following content. This user must exist in your installation and needs to authenticate before sending mail.
			```
			`user-to-allow-everything@example.com OK`
			```

			Open `data/conf/postfix/main.cf` and find `smtpd_sender_restrictions`. Prepend `check_sasl_access hash:/opt/postfix/conf/check_sasl_access` like this:
			```
			`smtpd_sender_restrictions = check_sasl_access hash:/opt/postfix/conf/check_sasl_access reject_authenticated_sender_login_mismatch [...]`
			```

			`Run postmap on check_sasl_access:`

			```
			`docker-compose exec postfix-mailcow postmap /opt/postfix/conf/check_sasl_access`
			```

			`Restart the Postfix container.`