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| author | Luke Smith <luke@lukesmith.xyz> | 2024-07-16 08:33:44 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-07-16 08:33:44 -0400 |
| commit | 7c5e26ccb1c1b401880bf7e22c74b92c86df7e5e (patch) | |
| tree | 137b4202e7a362401ed66b9cd85482a4a9a1e642 /content/mail | |
| parent | b5d7e4b977208d89b4615a8ded2525c97e3ba517 (diff) | |
| parent | 613b27642fa4c5315ae925ec6701a224eec08c39 (diff) | |
Merge pull request #298 from m-chrzan/m-chrzan/spf
Specify ip4 and ip6 SPF mechanisms to comply with gmail's policies
Diffstat (limited to 'content/mail')
| -rw-r--r-- | content/mail/rdns.md | 1 | ||||
| -rw-r--r-- | content/mail/validate.md | 15 |
2 files changed, 15 insertions, 1 deletions
diff --git a/content/mail/rdns.md b/content/mail/rdns.md index 0e2943d..85cce0f 100644 --- a/content/mail/rdns.md +++ b/content/mail/rdns.md @@ -3,6 +3,7 @@ title: "Setup rDNS" tags: ['mail'] date: 2022-12-02 --- + While [DNS records](/basic/dns) refer a domain name to the IP address where the the website is hosted, there is also rDNS (reverse DNS) and specifically PTR (pointer) records which do the reverse: link a diff --git a/content/mail/validate.md b/content/mail/validate.md index 15db0c7..8447409 100644 --- a/content/mail/validate.md +++ b/content/mail/validate.md @@ -209,9 +209,22 @@ an email-authentication standard used to prevent spammers from sending messages that appear to come from a spoofed domain. cat /etc/mailname - echo "v=spf1 mx a:mail.$(cat /etc/mailname) -all" + IP4=<your VPS's IPv4 address> + IP6=<your VPS's IPv6 address> + echo "v=spf1 mx a:mail.$(cat /etc/mailname) ip4:$IP4 ip6:$IP6 -all" + +**Note**: previous versions of this guide didn't ask you to specify the `ip4` +and `ip6` mechanisms. If you don't include them, some email hosts (most +notoriously gmail) will not accept mail from your server. + +The `IP4` and `IP6` values should be the same as what you set your [PTR +records](../rdns) to. The output of `cat /etc/mailname` is the Host field. The output of the second command is the TXT value. Again, you can check [that site](https://appmaildev.com/en/spf) to make sure your DKIM, DMARC, and SPF entries are valid. That's it! + +## Contribution + +- SPF mechanisms updated by Martin Chrzanowski \-- [website](https://m-chrzan.xyz), [donate](https://m-chrzan.xyz/donate.html) |