Greylisted, try again after some time

Greylisted, try again after some time

Can you check my ip, i send to duyna@vietlinkjsc.vn but have an error; my ip is 112.213.94.12

Here is log:
2018-01-09 09:40:29 H=mx.zoho.com [204.141.32.121] SMTP error from remote mail server after RCPT TO:<duyna@vietlinkjsc.vn>: 451 4.7.1 Greylisted, try again after some time
2018-01-09 09:40:32 H=mx2.zoho.com [204.141.33.55] SMTP error from remote mail server after RCPT TO:<duyna@vietlinkjsc.vn>: 451 4.7.1 Greylisted, try again after some time
2018-01-09 09:40:32 duyna@vietlinkjsc.vn R=lookuphost T=remote_smtp defer (-44) H=mx2.zoho.com [204.141.33.55]: SMTP error from remote mail server after RCPT TO:<duyna@vietlinkjsc.vn>: 451 4.7.1

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