[Python] [SMTPLIB] 550-5.7.26 This mail is unauthenticated

[㎝]

ciao luca!

Il giorno mer 14 giu 2023 alle ore 17:33 Luca <luca800 a gmail.com> ha scritto:
> Voi avete qualche idea ?

non so se c'entra, ma libero.it è uno dei pochi server postali
pubblici ad avere `-all` nello spf1 invece del più permissivo `~all`

```
$ dig +short libero.it txt | grep spf
"v=spf1 ip4:213.209.8.0/21 ip4:213.209.6.249/32 ip4:213.209.17.209/32
ip4:213.209.17.246/32 ip4:213.209.27.51/32 ip4:213.209.27.52/32
ip4:195.140.184.104/29 ip4:195.140.184.112 ip4:195.140.184.231/32
ip4:195.140.184.232/29" " ip4:195.140.184.240/29 ip4:141.206.150.96/29
ip4:141.206.150.48/29 include:mail.zendesk.com include:t.contactlab.it
-all"
```

e questo ad esempio causa non pochi problemi con le mailing list.

㎝

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