Conversation

Mar 27, 2021

thinking about how computers simply love to gaslight 🤔 i use G Suite and my emails end up in spam for some people and i have no idea how to fix this other than getting a dedicated IP and someone mentioned that twitter never shows them notifications for my interactions

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Make sure you have Google's DKIM keys set up properly, hard fail SPF and p=reject DMARC. Ideally, the PTR records for the IP addresses used to send mail match the mail server domain and I guess there's not much you can do about that when using G Suite.

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i have DKIM and DMARC p=reject, will check if my SPF is hard fail 🙏

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oh, it's soft fail. i should fix that. thank you!

Daniel Micay

@DanielMicay

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@saleemrash1d

The only issue I've run into hosting my own mail server is that the initial IPv4 address is often blacklisted from previous abuse. I currently have Postfix set to send mail only via IPv4 despite having fully working IPv6 because OVH only gives me /128 instead of a /64 block.

1:46 PM · Mar 27, 2021Twitter Web App

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and

IPv6 reputation is generally done based on /64 blocks but OVH only gives you a /64 for a dedicated server and I currently use a VPS for the mail server. I could switch but it's really not worth it to me when I can just disable sending mail via IPv6 while still having IPv6 work.

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and

Send an email to check-auth@verifier.port25.com and it will send you back a mail with the results of checking DKIM, SPF and a reverse IP check. I would hope that Google has appropriate PTR records for their mail sending IP addresses. No way for you to fix that if they don't.

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it's very tempting but i'm going to end up breaking it precisely at a time where i'm feeling "i would just like to send/receive emails without thinking about computers"