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Hello @aurelien-c When I run: # Ask Cloudflare about the PTR dig -x 164.172.73.196 +short @1.1.1.1 # Ask Google about the PTR dig -x 164.172.73.196 +short @8.8.8.8 I get no answer. This indicated that no PTR record has been set. From the documentation https://docs.cloudron.io/email/#ptr-record The PTR record is set by your VPS provider and not by your DNS provider.. For example, if your server was created in Digital Ocean, you must go to Digital Ocean to set the PTR record. @aurelien-c said in "Email not configured properly" with PTR4 issue: The troubleshooting section of the docs do not appear to bear fruit about this. Did you read the docs.cloudron.io/email/#ptr-record or docs.cloudron.io/email/#troubleshooting? And, did you configure the PTR in your Hoster?

That is very abnormal. Please send a mail to support@cloudron.io and link this topic in your ticket.

Thank you @laurent I'll try something like that.

@LoudLemur (Going by the topic subject), if the error is related to PTR record, then the solution is not correct. The PTR record is set by your VPS provider and not by your DNS provider PTR record goes by many names - Reverse DNS, rDNS, PTR. Unlike "forward" DNS which looks up something based on the domain name, a "reverse" DNS looks up based on the IP address. And who owns the IP address? The VPS provider. So, you have to change it there. This means that to fix PTR record issue, you have to fix this in SSDnodes and not in Porkbun or whatever name server you have. If SSDnodes, does not let you set PTR record, you have to ask them by raising a support ticket. More information at https://docs.cloudron.io/email/#ptr-record