We are having trouble to sent out mails.
We are trying to sent out via SSH to test:
(echo: subject: test; echo) | /usr/sbin/sendmail -v -Am -i info@example.com
But get error:
[2a01:7e01::f03c:91ff:febb:bbe2] Our system has detected that this
message does not meet IPv6 sending guidelines regarding PTR records
and authentication.
We have set the reverse DNS to from SERVER_IP to target: example.com
What are we missing here for it to be able to sent out mails?
分享 Here's where I would start...
I would first make sure that my file /etc/hosts contains my ipv4 address and server name like this (replace everything in quotes, do not include quotes)
127.0.0.1 localhost
"server ip" "yourServerName"."yourDomain.com" "yourServerName"
"yourDomain.com" is the address that your A record points to in your DNS settings.
To set "yourServerName", open /etc/hostname and change whatever is there to "yourServerName". Then reboot server.
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