2015-08-19 08:11:02 -05:00
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# Allow user to send email without smtp authentication
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2014-09-22 21:47:49 -05:00
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2015-08-19 08:11:02 -05:00
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Create a plain text file: `/etc/postfix/accepted_unauth_senders`, list all
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users' email addresses which are allowed to send email without smtp
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authentication. We use user email address `user@example.com` for example:
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2014-09-22 21:47:49 -05:00
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```
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2015-08-19 08:11:02 -05:00
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user@example.com OK
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2014-09-22 21:47:49 -05:00
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```
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2016-10-31 10:47:55 -06:00
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It's ok to use IP address instead like below:
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> For more allowed sender format, please check Postfix manual page: [access(5)](http://www.postfix.org/access.5.html).
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```
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192.168.1.1 OK
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192.168.2 OK
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172.16 OK
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```
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2015-08-19 08:11:02 -05:00
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Create hash db file with `postmap` command:
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2014-09-22 21:47:49 -05:00
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```
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2014-09-22 22:13:40 -05:00
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# postmap hash:/etc/postfix/accepted_unauth_senders
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2014-09-22 21:47:49 -05:00
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```
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2015-08-19 08:11:02 -05:00
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Modify Postfix config file `/etc/postfix/main.cf` to use this text file:
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2014-09-22 21:47:49 -05:00
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```
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smtpd_sender_restrictions =
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check_sender_access hash:/etc/postfix/accepted_unauth_senders,
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[...OTHER RESTRICTIONS HERE...]
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```
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Restart/reload postfix to make it work:
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```
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# /etc/init.d/postfix restart
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```
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