[RndTbl] Can't send to gmail. 451 4.5.0 SMTP protocol violation see RFC 2821

[John Lange]

Just in case someone stumbles on this thread; I never did do anything to
solve this problem but it just seemed to go away on it's own.

I suspect this is a form of Google greylisting. Once google gets to know
you a bit better it stops delaying your mail.

-- 
John Lange
www.johnlange.ca


On Wed, 2008-11-05 at 10:27 -0600, John Lange wrote:
> For some reason I can't seem to send any email to gmail accounts. The
> google mail servers keep telling me:
> 
> 451 4.5.0 SMTP protocol violation see RFC 2821
> 
> The MTS is standard postfix and I've tried it from a couple different
> machines which otherwise don't have any problems sending mail.
> 
> A google search turned up other people with the same problem but no
> solutions.
> 
> Anyone have a clue what the problem is?
>