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Interesting to hear this. The deylays have an explanation, and I think
you could say it's also a problem on the client side. Let's say you
send an email to someone and their server is down (and secondary as
well). What should your mail server do? I think SMTP RFC specifies that
your MTA should try to resend the message for a couple of times for
certain period of time. It's reasonable to assume there could be a
network problem or mainteneance downtime or something like that. In
which case it would be good to, let's say, wait a couple of minutes and
send try resending the message again. <br>
This is all that greylisting expects. Apparently, quite a lot of mail
servers (NTL!!! -- who said they are embarassed their system is this
bad and are working on it), especially 'home' installations are not
configured or cannot even be configured to take care of this very
plausible scenario.... <br>
<br>
mimo<br>
<br>
Bruce Richardson wrote:<br>
<blockquote cite="mid20040922105350.GB8917@phaistos.bruce" type="cite">
<pre wrap="">On Wed, Sep 22, 2004 at 11:08:58AM +0100, mimo wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Ian Norton wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hiya,
has anyone else had any new type of spam where written in very plain
clear english with no normal spam tricks , where someone tries to sell
you close combat and anti-aircraft weaponry?
</pre>
</blockquote>
<pre wrap="">Any nuclear weapons available? :)
Hearing this I kind of start missing spam.... We are running this on our
servers <a class="moz-txt-link-freetext" href="http://mimo.gn.apc.org/gps/">http://mimo.gn.apc.org/gps/</a> -- result very little spam, no to
say none
</pre>
</blockquote>
<pre wrap=""><!---->
Interesting to see that information hosted at GreenNet. GreenNet put
that system on their own mail servers a few months back and it caused a
few problems. At the time they put it in, I was a sysadmin at an
organisation that had a lot of contacts with GreenNet accounts and our
staff suddenly found that their e-mail conversations with those people
suddenly slowed to a crawl. Only some of this was down to
misconfiguration.
Greylisting needs to be very carefully tuned or it can become an
annoyance for others and even for your own staff.
</pre>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Please note that this account is being filtered using anti UCE systems. If you send email to this account make sure that it could not be mistaken as UCE.</pre>
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