If you find you are having issues with email delivery between O365 (Exchange Online) and On-premises it is possible that the domain is set to outboundonly true Hopefully the following will resolve your issue $Cred
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If you find you are having issues with email delivery between O365 (Exchange Online) and On-premises it is possible that the domain is set to outboundonly true Hopefully the following will resolve your issue $Cred
Continue Reading