May 24 19:37:00 veu postfix/smtp[2017]: 07566120ADF: to=myEmail@gmail.com, relay=gmail-smtp-in.l.google.com[74.125.133.27]:25, delay=0.7, delays=0.05/0/0.13/0.53, dsn=5.7.25, status=bounced (host gmail-smtp-in.l.google.com[74.125.133.27] said: 550-5.7.25 [1.2.3.4] The IP address sending this message does not have a 550-5.7.25 PTR record setup. As a policy, Gmail does not accept messages from 550-5.7.25 IPs with missing PTR records. Please visit 550-5.7.25 https://support.google.com/mail/answer/81126#authentication for more 550 5.7.25 information. o4-20020a5d47c4000000b0020fd1bd4e11si9995095wrc.695 - gsmtp (in reply to end of DATA command))
Problem solved.
Google 550-5.7.25 PTR record setup
Please public this topic for other users.
Google and other mail server force you to insert PTR in your dns for send/receive emails from GMailand others.
In Cloudflare or in aapanel/appstore/Dns Manager you must add this DNS RECORD:
for example your server or vps IP for your doamin is 1.2.3.4
Type = PTR
Name = @ = your-domain-name.com
Content = 4.3.2.1.in-addr.arpa
TTL = auto
cloudflare proxy = off
