https://gitlab.synchro.net/main/sbbs/-/merge_requests/226#note_2920

It sounds like it would be best to roll this back.Also, as far as DDMsgReader interperting @-codes, it only expands @-codes when reading personal email (not on networked sub-boards, or any sub-boards), similar to what you've described.  I could add an additional check to make sure the message was posted by a sysop.It doesn't expand @HANGUP@ or @DELAY@, so those wouldn't be an issue.
--- SBBSecho 3.20-Linux