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Re: Postfix mail gateway not rejecting non-existant local / relay recipients
From: mouss (usebsd
free.fr)
Date: Tue Jan 03 2006 - 18:22:17 CST
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Wesley K. Joyce a écrit :
>> Pardon my igonorance, what is meant by the comments in ps1 and ps2?
<off topic>
I get this from you:
<wjoyce
uvi.edu>: host mahi.uvi.edu[146.226.2.23] said: 554 Service
unavailable; Client host [82.239.111.75] blocked using
dul.dnsbl.sorbs.net;
Dynamic IP Addresses See:
http://www.sorbs.net/lookup.shtml?82.239.111.75
(in reply to RCPT TO command)
You obvioulsly can't ask offline and reject me.... Don't use DNSBLs
unless you know what they do (note that host($ip)=ouzoud.netoyen.net,
ip(ouzoud.netoyen.net)=$ip, a grep in the archives will show that this
correspondence have been the same for some time, and greping anywhere
will show that this IP never sent spam. This box is running netbsd (so
not a compromizable windows) and no mail gets out (either from it or
from its hosted windobs) except via postfix, and outgoing mail is
filtered, ... etc. so feel free to block it, but I hope you know why).
</off topic>
Anyway:
- top posting is when you put your reply on top of what you're replying
to. This may be appropriate in many situations, but is undersiable in
many public lists, because it requires people to read the whole message
and to analyze it to find out what you're replying to. google on that to
get more precise infos. While this is more or less controversial, it is
not very appreciated in this list.
- thread hijacking is what you did: you read a message and decided to
"reply to" to ask an unrelated question. The problem is that when you
"reply to", your mailer will add headers that include the message-id of
the replied-to message (and other message-ids). This causes at least
three problems:
1) the archives will have your message as part of the previous thread,
which is bad for people who are looking for infos
2) some people ignore threads based on the subject of the initial
message. They won't see your question, which is bad for you
3) some people read mail in a threaded view. hijacking breaks that and
is thus visually annoying (some threads are already long by themselves,
so hijacking will only make it worst).
But worst, on GUI MUAs, it doesn't take more effort to
(Good) compose + copy-paste the ML address (if you don't have it in your
addr book),
than to
(Bad) reply + delete the subject + correct the To header + remove the body.
[addon: if you reply to a "bad format" message, you MUA will probably
use that bad format in the reply, which will cause you more hate...]
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