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DNS: revert hardcoded DNS server for reverse DNS checks
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@@ -43,7 +43,7 @@ class DNS:
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def check_ptr_record(self, ip: str, mail_domain) -> bool:
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"""Check the PTR record for an IPv4 or IPv6 address."""
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result = self.shell(f"dig @ns1.your-server.de -r -x {ip} +short").rstrip()
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result = self.shell(f"dig -r -x {ip} +short").rstrip()
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return result == f"{mail_domain}."
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