I am currently installing our server with SBS 2003 and I am having problems various problems with e-mail. If have tried to find the solutions already available and in these, people often refer to the SMTP virtual server. This server should be visible in the IIS Manager. What bugs and worries me is that I cannot find it here but I can in two other ways: through server management and through the exchange system manager. In the IIS manager when clicking our server it shows 'application pools', 'web sites' and 'web service extensions'.
Maybe helpfull to mention: I have tried to do the following: add or remove programs > add/remove windows components > details of application server > details of IIS > here the SMTP service is already checked.