Postfix security issues

Lezárva Kiadva: Aug 6, 2013 Kiszállításkor fizetve
Lezárva Kiszállításkor fizetve

We are currently facing some security issues with an exisiting email server under Ubuntu/Postfix. Since around 2 weeks the server started to send a large amount of emais to random email addresses acting like a relay.

We took some measures (change of admin password, relay denied, etc.) with no success so far. We are thus looking for an expert to sort the issue and explain to us how to avoid such situation in the future.

Linux Rendszergazda

Projektazonosító: #4800924

A projektről

38 ajánlat Távolról teljesíthető projekt Utoljára aktív: Sep 12, 2013

38 szabadúszó tett átlagosan 396$ összegű árajánlatot erre a munkára

linuxfreak1985

I can do it. please see my past reviews, lets complete this project

$257 USD 1 napon belül
(811 vélemény)
8.2
FandaR

Hello, I have over 9 years experience as an Linux admin and check and fix your postfix and server security/config. Please feel free to ask if you have any questions. Thank You

$526 USD 3 napon belül
(415 vélemény)
7.5
osmanbsd

Email systems expert here, please check PM

$263 USD 2 napon belül
(139 vélemény)
7.4
nknk

I am an experienced Linux system administrator with deep Postfix knowledge. I will perform the setup, tuning and provide further support of the project for you. I

$263 USD 5 napon belül
(217 vélemény)
7.2
sabdsouza

I can help you with this

$250 USD 3 napon belül
(181 vélemény)
6.7
zeuner

I have in-depth knowledge of postfix. Please refer to your PMB for further discussion.

$760 USD 12 napon belül
(7 vélemény)
6.7
izghitu

Hi, I am a highly experienced sysadmin with 8+ years of work in this field. I will determine how spam is sent and advise solutions on how this can be prevented in future. I will add basic hardening to the server as Továbbiak

$277 USD 3 napon belül
(304 vélemény)
6.7
ielkfarna

Professional Linux Freelancer.

$526 USD 3 napon belül
(58 vélemény)
6.5
tanujchugh

hi, please check pmb for further details. thanks

$277 USD 1 napon belül
(142 vélemény)
6.1
mpankov

Hi, I have experience with postfix and can help you with your problem.

$600 USD 3 napon belül
(14 vélemény)
5.1
PerlIsFun

It's almost sure not a genuine Postfix problem but another security issue on your server. Anyway, I'd be glad to help, assuming root access over ssh to the server is granted. Thank you.

$300 USD 3 napon belül
(16 vélemény)
5.0
GandalfTheGrey

I am an experienced Linux administrator. Please provide more details so then I could estimate time and effort needed for this task and adjust my bid accordingly.

$500 USD 1 napon belül
(23 vélemény)
5.0
abusayed2004

I can do it...

$842 USD 5 napon belül
(28 vélemény)
4.7
pivn

let expert do this

$444 USD 3 napon belül
(22 vélemény)
4.7
amelantoney

PLEASE SEE MY PERSONAL MESSAGE YOU WILL DEFINITELY HIRE ME ...

$250 USD 2 napon belül
(22 vélemény)
4.4
octaviand

I can do this very easy . I have 3 mails servers with over 1000 under my administration .. please check PM .

$250 USD 1 napon belül
(12 vélemény)
4.6
jplopezy

I can help you, i need to see the hardering ,test open relay, vulnerability, easy password. regards

$555 USD 3 napon belül
(5 vélemény)
3.6
wahabproadmin

Hi I can assist you to find the loop holes.

$555 USD 7 napon belül
(13 vélemény)
3.3
tomuffner

Hello, I am an expert UNIX/Linux System Administrator, specializing in email issues and server/network security. I can solve this problem for you.

$526 USD 3 napon belül
(12 vélemény)
3.5
clearkruti

A postfix expert with more than 7 years of expertise in email services.

$277 USD 3 napon belül
(5 vélemény)
3.4