RFC 8314: Use of Transport Layer Security for Email Submission and Access

Re:RFC 8314: Use of Transport Layer Security for Email Submi... by ryan-c on Wednesday January 31, 2018 @09:26PM (#16279288)

I just went through the pain of switching to a new IP for my mail server a few months ago.

All major providers except Google were putting my messages in the spam folder by default despite me getting myself whitelisted in DNSWL and having proper FcRDNS, SPF, DKIM and DMARC configuration.

The IP was not in any reputable public blacklists, and the domain had been in use for many years.

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Re:RFC 8314: Use of Transport Layer Security for Email Submi... by jorangreef on Thursday February 01, 2018 @02:42AM (#16280229)

Did you check the reputation of your /24 neighborhood?

I have seen Microsoft blocking entire /24 neighborhoods on the basis of a single IP sending spam.

You were probably hit by that as collateral damage.

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Re:RFC 8314: Use of Transport Layer Security for Email Submi... by ryan-c on Thursday February 01, 2018 @08:50AM (#16281793)

Yes, I did. It was clean as far as I could tell. It was not just Microsoft, I also had issues with Yahoo, AOL and some others. The block I'm in is listed in some RBL called "spamgrouper"[1] but as far as I can tell nobody pays attention to it. No other lists showed any trouble.

1. http://www.spamgrouper.to/

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