I'm using CentOS with Postfix, Dovecot, Webmin/Virtualmin. I can't seem to receive emails for all addresses for one of our virtual servers configured via Webmin/Virtualmin. But I can send out (and it was received).
I tested sending using 3 Gmail addresses as senders and also a private email. No bounced email or errors whatsoever. I tried checking using POP3 and Usermin webmail and both do not receive the emails.
I also checked var/log/maillog and there's no error correlating to this issue. I also restarted Postfix, Dovecot.
Both SPF and SKIM passed as tested.
I also troubleshooted the following and it was fine (not real IP or domain).
[root@server ~]# host -t mx mysite.com
mysite.com mail is handled by 5 mail.mysite.com.
[root@server ~]# host mail.mysite.com
mail.mysite.com has address 103.230.54.115
[root@server ~]# host 103.230.54.115
115.54.230.103.in-addr.arpa domain name pointer server.mysite.com.
UPDATE: I just realized that I could receive the emails to my server from Gmail website, NOT from POP3 Gmail (from my Outlook).