Hi all, We run Exchange 2007 on 2003 servers. Where can I control how long exchange waits to resend an email if it fails to reach the sender?

Is this what you are looking for? http://technet.microsoft.com/en-us/library/bb123505(EXCHG.80).aspx Set-TransportServer -MessageRetryInterval MessageRetryInterval If so, it is worth noting that Microsoft recommend not changing the default limit from 1 minute. 1 minute Set-TransportServer cmdlet This parameter specifies the retry interval for individual messages that have a status of Retry. We recommend that you don't modify the default value unless Microsoft Support Services advises you to do this.