NOBOUNCE

Rejects null sender bounces.

Default:

off

Affects:

qmail-smtpd

Example:

"" (any value will do)

Note:

Use only in extreme cases and only for certain IP ranges.
Blocking bounces is considered harmful and strictly prohibited by RFC2821.
This can be useful if a spammer used your domain as sender and you get all the bounces.
Otherwise don't enable this! You want to get bounces!