Pre-Exchange 2007, when exchange generates DSN messages, the sender is "System Administrator".
In Exchange 2007, system-generated internal messages (DSN messages, Journal reports, Quota messages, Agent-generated messages) are sent out by Microsoft Exchange Recipient object. From the outlook, you should see the sender from Microsoft Exchange.
Get-OrganizationConfig format-list *recipient*
ForeignForestRecipientAdminUSGSid:
MicrosoftExchangeRecipientEmailAddresses : {SMTP:MicrosoftExchange329e71ec88ae4615bbc36ab6ce4109e@TLCTest.local}
MicrosoftExchangeRecipientReplyRecipient:
MicrosoftExchangeRecipientPrimarySmtpAddress: MicrosoftExchange329e71ec88ae4615bbc36ab6ce41109e@TLCTest.local
MicrosoftExchangeRecipientEmailAddressPolicyEnabled:True
If you want to modify Microsoft Exchange Recipient address, Set-OrganizationConfig cmdlet should be used.
External Postmaster is configured per transport server.
get-transportserver select name,*externalPost*
Name ExternalPostmasterAddress
TLCSV167:
TLC25 :Postmaster@test.com
TLCSV167 transport server does not have a externalPostmasterAddress.
TLC25 has email address Postmaster@test.com.
Both TLC25 and TLCSV167 transport servers are in the same organization.
