Re: obscure email address formats

[Chuck Swiger <chuck () codefab com>]

On May 23, 2011, at 1:30 PM, ArkanoiD wrote:
> Is there any good reason to allow email addresses (in smtp, imap and alikes)
> in any format different from mailbox@fqdn ?
>
> There is plenty of other stuff defined in RFCs and I wonder if anyone really uses it so
> I should *not* just filter it out.

People around these parts use address tags <user+mailbox () fqdn example org> all of the time to attempt delivery to a 
particular mailbox (if it exists) rather than INBOX.

RFC-5322 discusses obsolete addressing and header formats and suggests how they should be handled.  Nobody is likely to 
use explicit address routing nowadays, or UUCP !-paths, or headers with arbitrary amounts of whitespace between a 
header and the colon (ie, "Date     : " rather than "Date: ").

Regards,
-- 
-Chuck

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