main.cf,添加以下設定
smtpd_restriction_classes = submission_sender_checks
submission_sender_checks =
check_sender_access hash:/etc/postfix/reject_null_sender
master.cf,添加以下設定
# existing submission entry
submission ... smtpd
... other options ...
# add sender restrictions
-o smtpd_sender_restrictions=$submission_sender_checks
新增reject_null_sender,並增加以下內容
# reject_null_sender
<> REJECT null sender not allowed
check_sender_access hash:/etc/postfix/reject_null_sender
master.cf,添加以下設定
# existing submission entry
submission ... smtpd
... other options ...
# add sender restrictions
-o smtpd_sender_restrictions=$submission_sender_checks
新增reject_null_sender,並增加以下內容
# reject_null_sender
<> REJECT null sender not allowed
sudo postmap reject_null_sender
sudo service postfix restart
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方法2:
main.cf添加以下設定
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方法2:
main.cf添加以下設定
smtpd_reject_unlisted_sender = yes