You upgrade to SMS 2003 SP2 without extending the schema (remain at SMS SP1 schema) and now you start seeing 4918 errors from the site component manager. SMS will work without the SP 2 schema extension (with no support for FQDN) but it will log many messages like the one in subject.
Is there a way to suppress the generation of these messages while using SMS SP1 schema ?
First option is, tell SMS to not publish to AD. By default it is configured to publish to AD. It’s on the Advanced tab of the Site Properties dialog box. This is not the best option.
Second you could create a status filter rule to filter out this specific error until you can update the schema.