On 11/23/2014 2:12 AM, Aban Dokht wrote:
On 22.11.2014 22:05, Ted Mittelstaedt wrote:
That's a lot of work, there's a much easier way
Just search your /var/log/maillog for user unknown messages, and
create email addresses for the unknown users which are showing up
multiple times over multiple days. It's a great trick because it gets
spammers who already have email addresses in their
spamlists and who are too lazy to remove them when they get a
user unknown message from the mailserver.
I have a pretty old domain - I've seen user unknown messages for
users who cancelled mailboxes on the domain over a decade ago. I figure
10 years of getting user unknown messages is long enough for any real
humans and for legitimate mailing lists to remove those entries.
From my opinion, this is not a good idea as you are going to put those
servers onto your list.
This way you'll blacklist bulk senders, with badly configured or even
not bounce management, but they are not all spammers!
Who are you I've never seen you post on this list before. You sound
like a spammer who is scared to death that more people will be putting
up honeypots.
A bulk sender with no bounce management is a spammer, PERIOD. I'll
gladly invite any customer of mine who insists on receiving email from
bulk senders who don't do bounce management to go find another email
provider. Strange that I have NEVER had a customer complain about this.
I am VERY familiar with Gmails rules and Hotmail/Microsoft's rules for
bulk senders to send mail into their network. They mandate that anyone
sending bulk mail to them IS REQUIRED to do bounce management or they
will block them, end of story.
I am quite willing to accept mail from bulk mailers who follow CAN-SPAM
act in the United States - which by the way REQUIRES bounce management -
bulk mailers who do NOT do bounce management are committing a felony in
the United States.
Ted
