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Does SORBS (DNSBL) contains domain names?
I’m researching SORBS (Spam and Open Relay Blocking System) and its function in DNS-based Blackhole Lists (DNSBLs).
My question is straightforward: Is SORBS limited to storing only IP addresses, or ...
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Emails from my domain treated as spam by Gmail and Outlook [duplicate]
I know that this question asked multiple times before but I have a little bit different situation.
In Brief:
I have reverse DNS, PTR records, SPF records, DKIM 1024-bit key, IP not blacklisted, ...