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< title > Allow user to send email without smtp authentication< / title >
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// < a href = "./index.html" > Document Index< / a > < / div > < h1 id = "allow-user-to-send-email-without-smtp-authentication" > Allow user to send email without smtp authentication< / h1 >
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< p > Create a plain text file: < code > /etc/postfix/accepted_unauth_senders< / code > , list all
users' email addresses which are allowed to send email without smtp
authentication. We use user email address < code > user@example.com< / code > for example:< / p >
< pre > < code > user@example.com OK
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< / code > < / pre >
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< p > Create hash db file with < code > postmap< / code > command:< / p >
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< pre > < code > # postmap hash:/etc/postfix/accepted_unauth_senders
< / code > < / pre >
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< p > Modify Postfix config file < code > /etc/postfix/main.cf< / code > to use this text file:< / p >
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< pre > < code > smtpd_sender_restrictions =
check_sender_access hash:/etc/postfix/accepted_unauth_senders,
[...OTHER RESTRICTIONS HERE...]
< / code > < / pre >
< p > Restart/reload postfix to make it work:< / p >
< pre > < code > # /etc/init.d/postfix restart
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