jetkins writes "In an email to subscribers, DynDNS announced that they "will no longer deliver locally-generated NDRs from any MailHop systems." Mailhop is a multi-faceted service offering in- and outbound relay services, spam and virus filtering, and store-and-forward buffering.
DynDNS makes it clear that they are aware that this goes against RFC 2821 Section 3.7, but explains that in their opinion the increase in spam volume, and the use of NDR's as a spam vector in their own right, means that the value of NDR's is now far outweighed by their potential for harm.
Is DynDNS merely the first one to blink? Will this start a flood (mutiny) of ISP's following suit? Should they have made efforts to have the standard changed instead of just saying "fsck the police"?"
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