Sorry for this, but I’m a complete noob at an email server. I went into usermin webmail and sent myself a test message to my home email. Nothing ever showed up but it said it sent just fine.
So then I tried to send a test mail to my gmail account and it seemed to send fine, but then it got bounced back a minute later with this error:
gmail-smtp-in.l.google.com[2607:f8b0:4002:c06::1b] said: 550-5.7.1
[2600:6c5a:567f:f2b2:6e2b:59ff:fea5:344] Our system has detected that
550-5.7.1 this message does not meet IPv6 sending guidelines regarding PTR
550-5.7.1 records and authentication. Please review 550-5.7.1
https://support.google.com/mail/?p=IPv6AuthError for more information 550
5.7.1 . j128si7929454ybb.428 - gsmtp (in reply to end of DATA command)
Can anybody help me? I am totally clueless when it comes to email servers. Thanks in advance for any advice.