Phase 2 of ticket attachements by agents

functions.php

@@ -3,6 +3,11 @@
 // Role check failed wording
 DEFINE("WORDING_ROLECHECK_FAILED", "You are not permitted to do that!");
 
+// Ceiling on what the mail queue will attach to a single message. Uploads are
+// allowed up to 500 MB, which no mail server will accept - anything over this is
+// left on the ticket for the recipient to download instead of being emailed.
+DEFINE("MAX_EMAIL_ATTACHMENT_BYTES", 10 * 1024 * 1024);
+
 // functions.php is now a loader. Helper functions live in topical files
 // under functions/ - see each file's header comment for scope.