Zoho mail and Postfix relay

Zoho mail and Postfix relay

Hello,

I know this is an older topic, but I can't seem to find the answer.
I am working on setting up a SMTP relay with postfix and zoho mail.  The error message I am seeing is:

Dec 18 08:37:29 kowa postfix/pickup[245535]: 6F6C2E8B1F: uid=0 from=<this is my zoho account>
Dec 18 08:37:29 kowa postfix/cleanup[246896]: 6F6C2E8B1F: message-id=<1702910249.247021.1@server>
Dec 18 08:37:29 kowa postfix/qmgr[221723]: 6F6C2E8B1F: from=<this is my zoho account>, size=713, nrcpt=1 (queue active)
Dec 18 08:37:29 kowa postfix/error[246898]: 6F6C2E8B1F: to=<test email to>, relay=none, delay=0.02, delays=0.01/0/0/0, dsn=5.0.0, status=bounced ([smtppro.zoho.com]:587 smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = noanonymous smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt smtp_use_tls = yes)
Dec 18 08:37:29 kowa postfix/cleanup[246896]: 7235CE8B20: message-id=<20231218143729.7235CE8B20@server>
Dec 18 08:37:29 kowa postfix/bounce[246899]: 6F6C2E8B1F: sender non-delivery notification: 7235CE8B20
Dec 18 08:37:29 kowa postfix/qmgr[221723]: 7235CE8B20: from=<>, size=2894, nrcpt=1 (queue active)
Dec 18 08:37:29 kowa postfix/qmgr[221723]: 6F6C2E8B1F: removed
Dec 18 08:37:29 kowa postfix/error[246898]: 7235CE8B20: to=<this is my zoho account>, relay=none, delay=0.01, delays=0/0/0/0, dsn=5.0.0, status=bounced ([smtppro.zoho.com]:587 smtp_sasl_auth_enable = yes smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_sasl_security_options = noanonymous smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt smtp_use_tls = yes)
Dec 18 08:37:29 kowa postfix/qmgr[221723]: 7235CE8B20: removed

Here is the relay information from main.cf

relayhost = [smtppro.zoho.com]:587
# enable SASL authentication
 smtp_sasl_auth_enable = yes
 # location of sasl_passwd
 smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
 # disallow methods that allow anonymous authentication
 smtp_sasl_security_options = noanonymous
 # location of CA certificate
 smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
 # enable TLS encryption
 smtp_use_tls = yes

Is there anyway to fix this?  

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