fix(mail): prefer ipv4
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@@ -1350,6 +1350,8 @@ postfix:
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## my_variable = my_value
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overrides:
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postfix.cf: |
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inet_protocols = ipv4
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smtp_address_preference = ipv4
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smtpd_helo_restrictions = reject_unknown_helo_hostname
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smtpd_sender_restrictions = reject_unknown_sender_domain
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smtpd_client_restrictions = permit_mynetworks
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