[boost] Returned mail: Data format error

The original message was received at Wed, 22 May 2013 15:02:28 +0800 from seanfarrow.co.uk [86.198.252.36] ----- The following addresses had permanent fatal errors ----- ----- Transcript of session follows ----- while talking to lists.boost.org.:

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MAIL From:sean.farrow@seanfarrow.co.uk <<< 501 sean.farrow@seanfarrow.co.uk... Refused