Hi,
I provisioned an Ubuntu 24 LTS Instance on DartNode VPS. I can send emails to my server with ease, but when it’s time to send I get various issues. I’ve got it sending momentarily by editing the SPF Record. I’m using “v=spf1 ip4:<public_ip> a:mail.domain.com mx -all” and this works for receiving but not for sending.
Here’s some of the issues from Postfix Logs.
427EC86672: to=<***@gmail.com>, relay=gmail-smtp-in.l.google.com[142.251.116.27]:25, delay=1.1, delays=0.49/0.07/0.14/0.41, dsn=5.7.25, status=bounced (host gmail-smtp-in.l.google.com[142.251.116.27] said: 550-5.7.25 [108.165.213.200] The IP address sending this message does not have a 550-5.7.25 PTR record setup, or the corresponding forward DNS entry does not 550-5.7.25 match the sending IP. As a policy, Gmail does not accept messages 550-5.7.25 from IPs with missing PTR records. For more information, go to 550-5.7.25 https://support.google.com/a?p=sender-guidelines-ip 550-5.7.25 To learn more about Gmail requirements for bulk senders, visit 550 5.7.25 https://support.google.com/a?p=sender-guidelines. 586e51a60fabf-2c1116cefadsi2512900fac.244 - gsmtp (in reply to end of DATA command))
Any Assistance will be much appreciated.