Re: [exim] 454 Error

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Autor: Jeremy Harris
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A: exim-users
Assumpte: Re: [exim] 454 Error
On 27/07/16 01:34, Mike Kadin wrote:
> help.uber.com is a CNAME to frontends.uber.com which is a CNAME to
> frontends-sjc1.uber.com which has an MX record of mx.sendgrid.net.
> Sendgrid is our inbound SMTP provider:


CNAME chains are regarded as bad practice for efficiency reasons,
even if not actually being an error.
--
Cheers,
Jeremy