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Re: [ietf-smtp] Domain names in the presence of CNAME records

2013-05-07 15:06:38
On 05/06/2013 03:43 PM, Bart Schaefer wrote:
The relay should not rewrite the address.


The receiving server can treat the address any way it wants to.

Agreed, with only one remark: the receiving server that rewrites the domainpart of RFC5321.MailFrom and/or RFC5322.From before performing SPF and/or DKIM verification, loses the ability to _reliably_ perform SPF and/or DKIM verification after rewriting.


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