Hello Exchange experts, Markus Klein has an article: Implementing the X.400 Connector - Is It Worth Using with Exchange Server 2003? For us, for a potential client, it is - but can it be implemented with the "standard" edition? We wish to use the X.400 connector with Exchange Server 2003 "Standard" Edition and it only appears to be available with the "Enterprise" Edition. One can not add a TCP X.400 stack to the standard edition. Is it possible to copy some files from the enterprise edition to the standard edition to enable the x.400 connector? If so, which files, and where are they copied to? In Exchange 5.5 I believe the X.400 connector files came on a disk so are probably just a few dll files. We want the X.400 connector capability without the other features (and expense) of the Enterprise edition. Is this possible? Thanks for your help!