«Home

SMTP Server: How Do I Unblock A Blacklisted IP Address?

My mailserver got into the list of blacklisted IPs when hacker took over my mailserver. It was routing 100 mails per min over the weekend. By the time i got it patched up and back on the net i could not send mails to Yahoo and some other porpular mailservers. Please how can i remove the Ip address from the list of blacklisted IPs?

Avatar
Newbie
11 answers

Welcome to www.rdpsh0p.com BIG UPDATE

ALL RDP ITS FRESH and ALL TOOLS FRESH

++++++++==========www.rdpsh0p.com=========++++++++++

We Have:

RDP UNITED STATES 2003-07-08

RPD EU

RDP WORL WIDE

DHL

MATCH ACC

OVERSTOCK

EBAY ACC

UPS

FEDEX ACC

SHELL

MAILER

WEBMAIL

C PANEL

SHELL

PAYPAL

++++++++==========www.rdpsh0p.com=========++++++++++

ETC ETC...... ALL FOR YOU HACKERS WELCOME

www.rdpsh0p.com

0
Avatar
Newbie

You can check if your mail server is blocked using the spam database lookup thing at http://www.viewdns.info

It looks it up on over 30 different blacklists.

0
Avatar
Newbie

Getting access to your Mail server is when you have some default user name and password, well no system is secured on earth, just do your best

0
Avatar
Newbie

mehn, dis one na long thing o

0
Avatar
Newbie

Well - it always depends on the business case in which you are running your email server for - it is a company with a few users? or are you running a server serving over 500 active users like myself?

Qmail is rock solid, secure and more stable than sendmail but you can lock sendmail down pretty well if you have the time and you are willing to learn. Qmail is designed to run in environments that have alot of users i.e gmail and yahoo runs qmail.

You can try out postfix or exim or if you are not too comfortable with unix. You can use Hmail Server - it's a free windows opensource email server - I will advise you run it if your email server connects to your main pop server and pull your emails. You can run it as an external mail server but you know how windows is. I have ran it on a public IP before but I locked down the server like mad and checked it every single day - the wahala was just too much.

0
Avatar
Newbie

i am using sendmail at the moment. never used qmail befor. but i will try it sometime. if it get too tedious maybe i would use a new ip. thanks guys

0
Avatar
Newbie

Good question.

If you're running sendmail, you need to move to qmail, for the high security it provides by default. You must configure the server such that no relaying is possible for unauthorized sites.

Getting out of spam lists is not trivial. You're better off just getting a new ip. Yahoo for example will call you up and ask you a very long list of questions. You'll need your mail server log for that period when the incident occured.

Let us know how it goes.

0
Avatar
Newbie

you are welcome. By the way - what email server are you running?

0
Avatar
Newbie

thanks alexis i will do just that

0
Avatar
Newbie

go to www.dnsstuff.com and do a spam database lookup with your mail server IP, it will list all anti-spam servers that have black-listed your server. You will have to email all those guys and convince them that the issue has been solved.

For yahoo and hotmail and other big webmail companies - you will have to do the same but they will ask you for detailed information.

Another simple way to solve the whole problem is to get a new public mail server IP (Hope your ISP can spare this), also hope that your class hasn't been blocked.

0
Avatar
Newbie
Your answer
Add image

By posting your answer, you agree to the privacy policy and terms of service.