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1 vote
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Publishing Exchange Server public IP address in a hybrid Exchange setup?

It seems your issue has been solved in below link. https://docs.microsoft.com/en-us/answers/questions/943454/publishing-the-exchange-server-public-ip-address-i.html **RafaelDaRocha: In a hybrid ...
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3 votes

DMARC record is valid, but your domain's None/Quarantine policy does not yet protect it against email spoofing and phishing

It is not an error, but a common step while working towards stronger methods of protecting against spoofing. The warning reminds you that your published record, while still useful to opt into ...
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4 votes
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How can I create and update the existing SPF record to allow more than 10 entries?

I'm going through almost exactly the same issue at my employer. We have 11 DNS entries, some brought in by recursion (thanks gmail!) The ip4 and ip6 entries do not contribute, only things that ...
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0 votes

How do I check a PTR record?

Intro: (2) examples, one for IPv4 and the other for IPv6. The IPv6 PTR lookup procedure took me ages to find an answer to... IPv4: We'll use Google's IP for the IPv4 example: host -t PTR 209.85.218.49 ...
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6 votes

How can I create and update the existing SPF record to allow more than 10 entries?

This will break the SPF's check as a error will occur. To be specific, that error will come; SPF PermError: too many DNS lookups The mailflox will be affected as almost all servers/antispam check the ...
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