[RAINLOOP] Undelivered Mail Returned to Sender

Hi guys, I’m having an issue which I can’t figure out when sending emails via rainloop, it works with on gmail, yahoo but in spam… but in outlook I’ve got this error.


outlook-com.olc.protection.outlook.com[104.47xxxx] said: 550 5.7.1
Service unavailable, Client host [167.71.xxxxxx] blocked using Spamhaus.
To request removal from this list see
https://www.spamhaus.org/query/ip/167.71.xxxx (AS3130).
[HE1EUR04FT028.eop-eur04.prod.protection.outlook.com] (in reply to MAIL
FROM command)

it means your ip is blocked by spamhaus, ask your host for help, you might be blacklisted.

Spamhaus Has you blocked. You can request to have it unblocked, but you need to contact them with the email that is assigned to your IP (your custom Email)