[CentOS] postfix - reject of incoming mail due to helo check??

On 2012-02-02 15:39, Ned Slider wrote:
>
> I would recommend removing reject_unknown_client from your
> smtpd_sender_restrictions.
>

I would not recommend that, I would recommend you fix your DNS. If you 
have a lot of mail throughput perhaps run a caching-DNS server or proxy 
to improve performance and reduce timeouts.

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