Operating System & Version
CENTOS 7.9

rafael.martinez

Active Member
Jan 15, 2021
29
7
3
El Salvador
cPanel Access Level
Root Administrator
Hello, good afternoon

One of my users is having the following email bounce:

550 5.7.26 Unauthenticated email from xxxxxxx.net is not accepted due to domain's DMARC policy. Please contact the administrator of xxxxxxx.net domain if this was a legitimate mail. Please visit https://support.google.com/mail/answer/2451690 to learn about the DMARC initiative. n18-20020a81af12000000b002dc14577af0sor4696524ywh.78 - gsmtp

Please help me solve this bounce.

Greetings.
 

cPRex

Jurassic Moderator
Staff member
Oct 19, 2014
11,072
1,748
363
cPanel Access Level
Root Administrator
Hey there! It sounds like the domain has a DMARC policy in place that rejects messages under certain conditions. Is this an email you sent from your server?

Google is getting more strict about their rules, and you can see more here:

 

techAMIGO

Active Member
Nov 6, 2019
29
29
13
Kerala, india
cPanel Access Level
Root Administrator
Hey,
It seems you need to check the dmarc txt record for the domain and make it more liberal like
_dmarc IN TXT 'v=DMARC1; p=none' or if you need to get report of failures make it as 'v=DMARC1; p=none; rua=mailto:email-id-of-report; ruf=email-id-of-report'