Problem with email snappymail

Dear all,
I created some email with subdomain. And when i sent a test email to gmail i recived a notification email inbox with content:
“host[] said:
550-5.7.26 This message does not pass authentication checks (SPF and DKIM
both 550-5.7.26 do not pass). SPF check for [my subdomain***] does not
pass with 550-5.7.26 ip: [my*IP**].To best protect our users from
spam, the 550-5.7.26 message has been blocked. Please visit 550-5.7.26
Prevent mail to Gmail users from being blocked or sent to spam - Gmail Help for more 550
5.7.26 information. l18-20020a170903245200b001a18325699bsi3227853pls.258 -
gsmtp (in reply to end of DATA command)”

But when i try to sent it to my other server email, it’s ok.
One more problem is when i try to add this account to outlook it’s can’t be login in and take me a notification “We coun’t find any POP server…”

Someone please help me.
Thank so much!

Have you edited your server rDNS for both IPv4 and IPv6?

1 Like

i did it before create website on cyberpanel. I create A record subdomain with IPv4, and MX record subdomain to mail.subdomain

This should be mail and not mail.subdomain

where dns are managed please check

I create email subdomain like

I created all it same with Video Guide Manual