I have two STMP domains in my organization. (Domain A and B)
The postmaster account for Domain A works without a problem. The problem is that NDR for Domain B always come from postmaster@domainA.com. I have tried adding postmaster@domainB.com addresses to users in both domains (not at the sametime), but this does not work.
How can I have a NDR's from DomainA come from postmaster@domainA.com and NDR's from DomainB come from postmaster@domainB.com?
Also can the postmasters from address be change? (E.g postmaster@DomainA.com is changed to postmaster@DomainC.com after a company name change.)