My domain - makalika.live
I have several sites there, but constantly having problems with mail deliver to gmail. After checking with this tool:
“CertDetail” I got following warning:
Certificate 1 of 1 in chain: Cert VALIDATION ERROR(S): self signed certificate
So email is encrypted but the recipient domain is not verified
Cert Hostname DOES NOT VERIFY (mail.makalika.live != hwsrv-433937.hostwindsdns.com | DNS:hwsrv-433937.hostwindsdns.com)
So email is encrypted but the host is not verified
As I understood postfix tries to use my apache vhost certificate for makalika.live. I don’t have entry in apache for mail.makalika.live only a A record on my DNS.
I try to use following comamnd:
sudo letsencrypt certonly --standalone -d mail.makalika.live
But it fails because I have apache running on server using 80 port.
Could you please help me with it?