Haraka should support SMTP BDAT command

[The-Nutty]

Currently Haraka does not support the "BDAT" command, not only can this speed up sending large messages but it is required in some cases for example office 365 gives the following error in an NDR in specific messages.

550 5.6.11 SMTPSEND.BareLinefeedsAreIllegal; message contains bare linefeeds, which cannot be sent via DATA and receiving system does not support BDAT

Is there any intention to support BDAT? Or is it already added and im just missing something?

[KingNoosh]

We have no immediate plans to do this, we rely on contributions from outsiders for this kind of thing.

Might be worth looking at how we handle DATA. I'll be happy to review the PR if you do take this path.

We also have a Slack if you want to drop in and talk about the code too which you can find a link in the readme.

[celesteking]

Care should be taken when implementing this correctly, if at all.

[msimerson]

moved to wiki/TODO