email notifications

The email notification links for a closed discussion should not contain the link for the Post Reply since none can be added. This is confusing to any user but particularly someone new. Maybe the text should read "Post reply: Closed discussion".

This was posted originally here >>>http://drupal.org/node/293930

But I realized belatedly that it might be better to address this to those with multisite experience.

I have drupal 6.3 installed and run about 20 other TLDs (site1.com, site2.com, etc., all folders located in the /sites directory) off that single installation. Everything works fine, with one exception.

I've noticed that the standard php mail functions (for user registration and webforms, for example) work for the parent installation, but uniformly do not work for the child subdomain installations.