Currently no sorry. Maybe give it a try and let us know if you do get signficantly more spam as a result. 

    ChrisP.

Hi,

I believe this keeps a lot of spam away.

However, I have ONE automated email that causes "Header with no colon, corrupt headers".

Is it possible to only allow that for one IP?

Best,

Stephan

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p.s. We'd love a link from your website to our new domain: https://surgemail.com if/when u have time.