Hi Community members,
I installed an open source version of zimbra and tried mailing system. No doubt, it is very good and can be equally competed with gmail outlook.
I have put all information for spf, dkim, dmarc, rDNS to the IP and domain but still it did not solve my issues. Mails are pushed into Gmail filters in SPAM. This is very surprising. I have followed the tutorial of zimbra to fix the issue but still, there is no fix found for this.
No blacklist is available for the IP.
Can I expect a help on the issue ???