Re: IETF Policy on dogfood consumption or avoidance - SMTP version

["Andrew G. Malis" <[e-mail]>]

Jay,

One comment - RFC 2821 has been obsoleted by RFC 5321, so on the first
pattern, replace 2821 with 5321.

Thanks,
Andy


On Mon, Dec 16, 2019 at 4:47 PM Jay Daley <[e-mail]> wrote:

> Hi
>
> While there is not unanimous consensus, I think the mood is clearly to
> leave this as an operational decision.  In which case, taking into account
> the following recommendation ...
>
> On 17/12/2019, at 5:18 AM, Nick Hilliard <[e-mail]> wrote:
>
> Glen wrote on 16/12/2019 16:11:
>
> /^[0-9.]+$/             550 RFC2821 violation
> /^\[[0-9.]+\]$/         550 RFC2821 violation
> In just seconds, I can easily change the messages, or remove the
> rules, either with complete ease.
>
>
> s/RFC2821 violation/policy violation/
>
>
> … and the following technical comment …
>
> On 17/12/2019, at 6:04 AM, Viktor Dukhovni <[e-mail]> wrote:
>
> On Mon, Dec 16, 2019 at 08:11:11AM -0800, Glen wrote:
>
> There is a configuration file, with two lines in it:
>
> /^[0-9.]+$/             550 RFC2821 violation
> /^\[[0-9.]+\]$/         550 RFC2821 violation
>
>
> While the patterns look similar, the first one rejects non-compliant
> "EHLO 192.0.2.1" and similar dotted quads (or more generally some
> mixture of digits and dots), the second rejects RFC-compliant address
> literals.  So at least the second message should probably be different,
> if the rule is retained.
>
>
>
> … the following has now changed from
>
> /^[0-9.]+$/             550 RFC2821 violation
> /^\[[0-9.]+\]$/         550 RFC2821 violation
>
> to
>
> /^[0-9.]+$/             550 RFC2821 violation
> /^\[[0-9.]+\]$/         550 Policy violation
>
>
> As to the question of data, we cannot say for certain that the rejected
> messages were all spam, but we have only received one complaint in 10 years
> and so we can reasonably assume this rule has not caused problems that need
> to be addressed.
>
> Please let me know if you have any questions, comments or recommendations.
>
> kind regards
> Jay
>
> --
> Jay Daley
> IETF Executive Director
> [e-mail]
> [phone]
>
>