emails are not delevring

[jamerson]

Dear All,
I have configure the eFA for the first time, stuff are working for 2 domains.
our exchange is hosting 5 domains for our mother company.
for two domains emails are arriving however for the other domains the logs keeps trying to

Aug 20 00:11:06 spam postfix/smtpd[23618]: disconnect from mail-oln040092064073.outbound.protection.outlook.com[40.92.64.73] ehlo=2 starttls=1 mail=1 rcpt=0/1 quit=1 commands=5/6
Aug 20 00:11:59 spam postfix/smtpd[23618]: connect from mout.gmx.com[74.208.4.201]
Aug 20 00:11:59 spam postfix/smtpd[23618]: Anonymous TLS connection established from mout.gmx.com[74.208.4.201]: TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)
Aug 20 00:12:00 spam postfix/smtpd[23618]: NOQUEUE: reject: RCPT from mout.gmx.com[74.208.4.201]: 450 4.1.2 <Julien@doamin1.com>: Recipient address rejected: Domain not found; from=<julien@meandyou.com> to=<nico@ngpc.nl> proto=ESMTP helo=<mout.gmx.com>
Aug 20 00:12:00 spam postfix/smtpd[23618]: disconnect from mout.gmx.com[74.208.4.201] ehlo=2 starttls=1 mail=1 rcpt=0/1 data=0/1 quit=1 commands=5/7
Aug 20 00:13:10 spam postfix/smtpd[23618]: connect from mout.gmx.com[74.208.4.200]
Aug 20 00:13:10 spam postfix/smtpd[23618]: Anonymous TLS connection established from mout.gmx.com[74.208.4.200]: TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)
Aug 20 00:13:11 spam postfix/smtpd[23618]: NOQUEUE: reject: RCPT from mout.gmx.com[74.208.4.200]: 450 4.1.2 <julien@domain1.com>: Recipient address rejected: Domain not found; from=<julien@meandyou.com> to=<julien@domain1.com> proto=ESMTP helo=<mout.gmx.com>
Aug 20 00:13:11 spam postfix/smtpd[23618]: disconnect from mout.gmx.com[74.208.4.200] ehlo=2 starttls=1 mail=1 rcpt=0/1 data=0/1 quit=1 commands=5/7

Please advise.

[jase72]

Hi jamerson (again!),

Check your DNS configuration in EFA. SSH > IP Settings > Primary DNS & Secondary DNS.

I've got EFA using our AD DNS servers (EFA also has "DNS Recursion" disabled). Whatever you decide to use I'd recommend not using public or your ISPs DNS servers otherwise you'll probably find some of your RBL etc DNS queries will fail due to overuse.

If you already are using your internal AD DNS then make sure you don't have split DNS.

https://www.fencepost.net/2010/03/fix-p ... not-found/ seems oddly similar.