[Postfix] mail bounced - 552 5.1.1

[Postfix] mail bounced - 552 5.1.1

I am getting the following error when I try to send mail from my server using postfix:


Oct 21 04:17:28 vps-b postfix/pickup[4660]: C3DC61225AE: uid=33 from=< from_email@bloomingline.com>
Oct 21 04:17:28 vps-b postfix/cleanup[4678]: C3DC61225AE: message-id=< 20161021081728.C3DC61225AE@web1.cloudrino>
Oct 21 04:17:28 vps-b postfix/qmgr[4661]: C3DC61225AE: from=< from_email@bloomingline.com>, size=926, nrcpt=1 (queue active)
Oct 21 04:17:29 vps-b postfix/smtp[4680]: C3DC61225AE: to=< to_email@bloomingline.com>, relay=mx.zoho.com[165.254.167.50]:25, delay=1.2, delays=0.27/0.01/0.5/0.38, dsn=5.1.1, status=bounced (host mx.zoho.com[165.254.167.50] said: 552 5.1.1 < to_email@bloomingline.com> Mailbox delivery failure policy error (in reply to RCPT TO command))



SPF and DKIM are both setup in my DNS (DKIM verified) but still can't send email...






But I can send mail from other mail service like Gmail... Is there something else I am missing?