mod_smacks_noerror: Add ability to silence errors if mod_offline is disabled This will also silence "message not delivered" errors if mod_offline is disabled and all clients are offline. This assumes working MAM for all clients (lready assumed by the rest of this module).

This module lets you block connections to remote servers at the s2s
level.

``` {.lua}
s2s_blacklist = {
    "proxy.eu.jabber.org",
}
```