Hi, We have an AD contoso.com.ph
With subdomain subdomain.contoso.com.ph
We installed exchange 2010 to subdomain.contoso.com.ph
Mail addresses are like user@subdomain.contoso.com.ph
We can receive mail from external users but we cannot send mail to external recipients
Cannot send mail to user@contoso.com.ph with error#550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ##
Cannot send mail to gmail and yahoo recipient.. It just queues up in exchange
Send connector network is u”use MX records to route mail automatically”
Any known issue?
tnx