At 02:19 18-05-2008, Peter J. Holzer wrote:
Speaking of validation, there is one interoperability issue the draft
doesn't mention: Mail address verification by SMTP callout. For
verification of envelope senders this works fine, but there are other
applications where a mail address needs to be verified:
This is a general comment on address verification and not about
whether it should be done or not.
There was a time when it was recommended to disable VRFY to prevent
address verification. Nowadays we get around that with SMTP
callouts. Such a practice goes against the explicit policy of the
receiving MTA.
Regards,
-sm