Busybox's sendmail refusing addresses with a '+' in them?

[Denys Vlasenko]

On Sat, Aug 25, 2018 at 12:44 PM Giel Goudsmit <giel at goudsmit.tech> wrote:
>
> Hi all,
>
> Not sure if this is the right place to ask; was unable to find mention of it after some searches, but the source-code confirmed to me that busybox's sendmail implementation doesn't allow addresses with a '+' in them though they are as far as I know RFC compliant.
>
> Is this a conscious choice for any particular reason? If not I'll be more then happy to submit a patch.

commit c39ee047051fb36f4db907c037e22db586490f42
Author: Denys Vlasenko <vda.linux at googlemail.com>
Date:   Sun Feb 12 21:57:22 2017 +0100

    sendmail: allow "+" symbol in recipient. Closes 9646