Mail Proxy: How To Stop CGI Mail Proxies
Jun 20, 2009
During last week, two of our clients' accounts got compromised (most probably due to weak passwords) and there was a CGI script installed which started sending emails to more than 200,000 email accounts. This email addresses were stored in a text file.
By the time we noticed this activity, our server got black listed on major RBLs like Barracuda, SpamCop, Spamhaus etc and it took around 2 days to cleanup
3 days later, another account compromised with same *thing* and it really is pain in the arse now dealing with this and angry clients
We've already implemented a policy to restrict users to send 100 messages/per hour/domain which is working, but it seems this *thing* bypass exim.
I guess this Open Proxy Servers a Source of Spam is what i want to explain!
So my question is, if I've understood this right, is it possible to stop scripts like this or can we enforce mailman to use exim all the time to send messages and stop direct-mailing?
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Mar 30, 2009
in the last 2 weeks has increased the spam mail to external users using our mail accounts.
So a user receives spam believing that it is sent from our sites.
I think the best method is to create a txt file in dns but I have many doubts about how to proceed.
Looking at one of the e-mail back to our mail server I see that emails are sent via outlook.
This is an example of the emails: ...
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Dec 6, 2008
i am getting hundreds of theses in my mail log each day, trying different names etc and want to put a stop to them and auto ban the ips.
I have APF
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Jan 17, 2008
I check and see many email was sent from my domain but i dont do it, how to stop this problem ?
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Oct 24, 2009
I have a server that is running linux with WHM/cPanel , some of servers are rejecting mails through server and says that your server is open proxy mail server.
how to check that our server is open proxy or stop open proxy and how can i prevent our server from spammer?
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Dec 5, 2014
Is it possible to use a Central MailServer Proxy (eg. Dovecot Director/Proxy or Nginx). We have many Plesk Server. All with Postfix and Dovecot.... On each Server is a SSL Cert for MailService but we want ONE Host... mail.example.com with one SSL Cert.
How is it possible to Sync the User from all Hosts with a MailProxy? Only so customers can be transferred from server to server.
[URL] ....
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May 14, 2009
Like many of you, i'm very keen on protecting my privacy. I live in a European country and i don't trust my government or Brussels.
Unfortunately my knowledge about computer privacy is very little, so i hope you guys can help me out a bit.
What i need is:
- Anonymous offshore e-mail account, in a country like Hong Kong, Belize etc.
Payment by western union, SSL or other encryption, no record storage like when i logged in with which IP address etc.
- Anonymous offshore proxy, also in an offshore jurisdiction like Hong Kong.
Payment by wetsern union, Highly encrypted, no records etc.
I found some companies who offer these services, trilightzone.org pretty much offers everything i need. But can i trust them? Because they only exist in "cyberspace".
katzglobal.com
privacy.li
trilightzone.org
anonymizer.com (not really offshore and they snoop in your records and emails, pro-actively work together with the gov.)
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