> Dear developers,
> There's a typo error in www.postfix.org/postconf.5.html:
> # Handle both Postfix and qmail extensions (Postfix 2.11 and later).
> recipient_delimiters = +-
> Looks like it should be 'recipient_delimiter', not 'recipient_delimiters'
> (ends with 's'). recipient_delimiters doesn't work at all.
Looks like that text has fallen behind the rest of the system.
At some point there was discussion of introducing the a name
"recipient_delimiters" but it turns out that the old name works
just fine. Fixed in Postfix 2.11 and later.