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On 2020-07-20 12:39, antlists wrote: |
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> On 20/07/2020 15:55, Peter Humphrey wrote: |
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>> fatal: in parameter smtpd_relay_restrictions or smtpd_recipient_restrictions, |
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>> specify at least one working instance of: reject_unauth_destination, |
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>> defer_unauth_destination, reject, defer, defer_if_permit or |
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>> check_relay_domains |
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>> |
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>> Which of those restrictions do I specify, and where, and why aren't they set |
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>> by default? |
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> |
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(I missed the original mail, so I'm replying here.) |
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If you don't specify one of those restrictions in one of those places, |
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your mail server is an open relay. Postfix doesn't let you do that. |
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One of them is set by default; smtpd_relay_restrictions end with |
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defer_unauth_destination on new installs. |
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