【Microsoft365参考書】550 5.7.51 TenantInboundAttribution; Rejecting. Recipient has a partner connector with RestrictDomainsToIPAddresses or RestrictDomainsToCertificate set.
550 5.7.51 TenantInboundAttribution; Rejecting. Recipient has a partner connector with RestrictDomainsToIPAddresses or RestrictDomainsToCertificate set.
