(no email)
Date: Sat Jun 01 2002 - 19:39:19 EDT
On Sat, 1 Jun 2002, luna wrote:
>
> example: a customer goes into a store that is advertising in the window
> "foo available here, for valid customers". the customer then asks an
> employee "hi - where can i find the foo?". the employee responds "we do
The analogy fails because ETRN service is advertised in customer service
agreements on ISP web sites. One cannot treat ESMTP EHLO responses as a
service offering, it is instead a capability advertisement to a peer
program. There is no harm in advertising the capability.
The only ESMTP capability that Postfix should perhaps offer optionally is
XVERP, both because it is not standardized (it can cause interoperability
issues with some clients) and it can increase SMTP response amplification.
A more fruitful direction would be to implement a new namaddr match list
called "smtpd_verp_networks" with a default value of "$mynetworks", and
then only advertise verp service to clients matching "smtpd_verp_networks"
and to not advertise XVERP unless the client matches "smtpd_verp_networks".
-- Viktor. - To unsubscribe, send mail to with content (not subject): unsubscribe postfix-users
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