Send the following on WhatsApp
Continue to ChatImproving Anti Spam : Reject Unlisted Domain On Zimbra 8.5 https://imanudin.net/2014/09/11/improving-anti-spam-reject-unlisted-domain-on-zimbra-8-5/
Improving Anti Spam : Reject Unlisted Domain On Zimbra 8.5 https://imanudin.net/2014/09/11/improving-anti-spam-reject-unlisted-domain-on-zimbra-8-5/