[TUHS] Who is running their own mail server and what do you run?
gtaylor at tnetconsulting.net
Thu Sep 21 15:30:10 AEST 2017
On 09/20/2017 10:14 PM, Dave Horsfall wrote:
> Didn't I just see you somewhere else? :-)
> Yep; as I recall, the RFC line length is no more than 254 chars (I
> think), with no limit on the number of continuation lines. Try
> connecting to my server at horsfall.org (I'll make you wait around 10
> seconds), then check out my RFC-compliant banner... I'll keep an eye
> out for you in my logs :-)
I want to figure out how to make a multi-line banner. (In Sendmail.)
I feel like your greet_pause was more than 10 seconds, but so be it.
Still shouldn't be a problem.
> Check out www.horsfall.org/spamlog.pdf for a nice pretty graph; the
> rejects on "banner" is the purple one on the top; the "reject" line is
> the red one, and the "spam" line (stuff that gets through) is pink (for
> SPAM, geddit?).
> Note that many of the "banner" violations are from woodpeckers i.e. they
> keep trying until they either give up or I notice (and firewall them).
I've wondered about a more featureful syslog daemon that could pattern
match and watch for the log message for pre-greeting traffic, and
forward them to a script that would dynamically update an RBL. I just
haven't found enough round-tuits yet.
> The tools behind this are still a work in progress, so I don't currently
> log the number of "wait" violations etc (it was implemented fairly
> (And yes, my HTML programming sucks.)
Interesting work. I'd be curious to see how you're doing some of that
and think about implementing it myself.
Thanks for sharing Dave.
Grant. . . .
unix || die
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