[H-GEN] sendmail timeout problem

[Robert Brockway]

On Fri, 12 Dec 2003, Bruce Campbell wrote:

> > If you use ecn some remote routers will go gaga on you.  I've seen this
> > exhibit as "truly bizarre" mail problems.
>
> Its more the age of ACLs on said remote routers/firewalls, some of which
> predate the creation of ECN, and still think that using those 'reserved'
> bits in TCP is an indication of someone trying something nasty.

Yeah, my explanation of what was happening on the router was a bit
misleading.  Nothing is actually wrong with the routers but they aren't
interpretting reserved TCP bits correctly as Bruce explains.  As someone
once wrote (paraphrasing) "Whoever wrote the software on those routers
failed to realise that "Reserved for future use" meant the bits might be
used in the future).

> connection sans ECN should the ECN attempt disappear[1] into a black hole.

This would allow sites to interoperate with the ECN-broken routers while
still gaining the advantages of using ECN with everyone else.

Rob

-- 
Robert Brockway B.Sc. email: robert at timetraveller.org, zzbrock at uqconnect.net
Linux counter project ID #16440 (http://counter.li.org)
"The earth is but one country and mankind its citizens" -Baha'u'llah