[nylug-talk] Is this usual?

[Henning Follmann]

On Sat, Jan 19, 2008 at 11:30:26AM -0500, Ron Guerin wrote:
> Henning Follmann wrote:
> > On Sat, Jan 19, 2008 at 01:16:17AM -0500, Kevin Mark wrote:
> >> Hi,
> >>> By the way, what is the problem? And did it ever get resolved?
> >>> -- 
> >> Its email related ( I posted about it on here). They told me to add the
> >> offending domain to their white list. I am waiting for this to see if it
> >> works. http://lists.debian.org/debian-user/2007/12/msg00678.html
> >> See the link for details.
> >> -K
> > 
> > I read the thread on debian-user and it looks like that your email
> > server is the problem, not verizon.
> > 
> > As stated on the list, you are using your own smtp server which cannot
> > be resolved. Most server deny email from these type of setups.
> 
> I think at least some of Kevin's confusion comes from this:
> 
> <debian-user at lists.debian.org>:
> 82.195.75.100 does not like recipient.
> Remote host said: 550 5.7.1 <debian-user at lists.debian.org>: Recipient
> address rejected:
> 
> A user might read this and actually think that it means what it clearly
> says, which is that it's a mail server rejecting a recipient, when in
> fact it's the Debian mail server rejecting the SENDER, which is Kevin's
> email address or IP address (it's not yet clear which)
> 
> Verifying this is easy enough:
> 
>   ~ telnet 82.195.75.100 25
>   220 liszt.debian.org ESMTP Postfix
> 
> Indeed, the server with an ax to grind is Debian's.  Decoding the rest
> of it, you get that (IIRC) Debian's rejecting Kevin's mail because
> postmaster at kevinssendingaddress isn't valid, and because
> abuse at kevinssendingaddress doesn't work.  Admittedly this seems a bit
> hard to believe because it shows questionable judgment to block solely
> on rfc-ignorant.org.
> 
> My guess is that the other stuff mentioned matters too, and probably
> more.  And although I don't know what IP Kevin's mail server is on, I'm
> guessing it's probably dynamic IP space, and it's a tough ride trying to
> get mail accepted from a host on a dynamic IP address, or any range of
> IPs that ISPs have self-submitted as "home service" addresses.  I
> believe Verizon is one of the ISPs that publishes its home DSL address
> range for the purpose of everyone else blocking SMTP connections from
> those addresses.
> 
Which just reminds me how hard it is to maintain a sane smtpd.

But to sum it up, no need to call verizon (they can't do anything about
it) - besides that it almost never worth calling verizon for help
because their technical help is utterly clueless.

Henning



-- 
Henning Follmann           | hfollmann at itcfollmann.com
it consultant              | www.itcfollmann.com