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add note about MX record

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Aine
2022-09-06 16:46:14 +03:00
parent 7d435f7ba8
commit 1f896d1b26
1 changed files with 32 additions and 1 deletions
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README.md
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@@ -125,7 +125,38 @@ DOMAIN. 1799 IN TXT "v=spf1 ip4:111.111.111.111 -all"
</details>
**Third**, add new DKIM DNS record of `TXT` type for subdomain `postmoogle._domainkey` that will be used with postmoogle.
**Third**, add new MX DNS record of `MX` type for your domain that will be used with postmoogle, it should point to the same (sub-)domain.
Looks odd, but some mail servers will refuse to interact with your mail server (and Postmoogle is already a mail server) without MX records.
<details>
<summary>Example</summary>
```bash
dig MX DOMAIN
; <<>> DiG 9.18.6 <<>> MX DOMAIN
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12688
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;DOMAIN. IN MX
;; ANSWER SECTION:
DOMAIN. 1799 IN MX 10 DOMAIN.
;; Query time: 40 msec
;; SERVER: 1.1.1.1#53(1.1.1.1) (UDP)
;; WHEN: Tue Sep 06 16:44:47 EEST 2022
;; MSG SIZE rcvd: 59
```
</details>
**Fourth** (and the last one), add new DKIM DNS record of `TXT` type for subdomain `postmoogle._domainkey` that will be used with postmoogle.
You can get that signature using the `!pm dkim` command: