Subsciptions and Domain Access

I am using Subscriptions in conjunction with Domain Access. Page X is published only on x.example.com/content/x. Page Y is published only on y.example.com/content/y. Since cron is run as http://example.com/cron.php, notification messages will link to (unreachable) pages example.com/content/x and example.com/content/y. One could run multiple crons, one for each subdomain, but the number of subdomains can be huge. Could the problem be handled in Subscriptions via hook_domaincron() as mentioned in http://drupal.org/node/316977 ? If feasible, this could be a Subscriptions feature request. Thank you.