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Network and email server security

A specialist in computer network security is required in CentOS 7 operating systems, to configure an email server (Postfix) in order to prevent reporting of the unwanted email list, and to try to optimize the security and speed of the network.

Example: Remove the botnet reported in the following url with the IP [login to view URL]:

[login to view URL]

Our network is in Medellin, Colombia. There are about 6 server with CentOS 7.
All traffic pass over Microtik router.
The problem is that we don't know what is the inffected server.
Mail server is Postfix/Dovecot. We need to install TLS certificate too.
The purpose of the project is when we send a email from our server don't arrive to junk mail.
No control panel, all server administration is via bash.

Kĩ năng: An ninh máy tính, Linux, Quản trị mạng, Quản trị hệ thống

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Về Bên Thuê:
( 0 nhận xét ) Colombia

ID dự án: #17170210

22 freelancer đang chào giá trung bình $144 cho công việc này

cjconstante

Hi there! I am a system administrator security focused with 5+ years of experience configuring and securing servers. I can deploy your mail server with the proper security settings to avoid spam and mail headaches in t Thêm

$230 USD trong 5 ngày
(35 Nhận xét)
8.1
kuldeepvk

Hi, I will configure postfix on server for mailing and implement authentications like spf,dkim,dmarc,etc. for good inbox delivery. Thank you

$77 USD trong 0 ngày
(179 Nhận xét)
6.5
tanujchugh

Hi, I will setup email security on server as per your requirement, will disable open relay and implement security for email server and firewall. Thanks

$155 USD trong 3 ngày
(135 Nhận xét)
6.1
himayatkhan

Hi, I have read your project description and would like to offer my services. I am a certified network consultant having nine years of experience in network and system administration. I am proficient working with su Thêm

$155 USD trong 3 ngày
(47 Nhận xét)
6.1
vipinharidas

Hi, server expert here. I can help you in setting up the email server. Please find my previous project reviews in the following freelancer profile link: https://www.freelancer.com/u/vipinharidas.html . Will complete t Thêm

$83 USD trong 3 ngày
(76 Nhận xét)
5.4
ITSecurityPro

Hi there, I am IT Security professional with more than 4 years of hands on experience. I can fix and secure your email server. lets discuss to start. Thank you. Best Regards

$177 USD trong 4 ngày
(28 Nhận xét)
5.2
infihost

Hi, We will migrate the mail server from windows server to centos server without any data loss. We will also optimize the server. Thank you.

$66 USD trong 1 ngày
(41 Nhận xét)
4.7
lorenguer

C7 #!{guru root} is a technology company with 12 years of experience, specializing in computer networks and systems. Founded in Buenos Aires between the design district and technological GuruRoot from members of a rese Thêm

$222 USD trong 10 ngày
(3 Nhận xét)
4.1
Hostingshades

Hello, I have a team of linux server admins and developers having experience of more than 5 years. I can do this project for you as I have done similar projects several times. Let's come over chat-box for further info Thêm

$125 USD trong 1 ngày
(37 Nhận xét)
4.2
$66 USD trong 1 ngày
(10 Nhận xét)
3.7
atikullx

Hire me. I'm an Email & DNS Server, SMTP, Spam Control, Postfix, Exim, PowerMTA, Interspire, MailWizz, Email Marketing Expert, Web Designer, Linux System Admin, AWS & Google Cloud Expert, Web Security Analyst & Websit Thêm

$150 USD trong 1 ngày
(16 Nhận xét)
3.2
Angle14

Hello, I'll install postfix and will implement all server Security techniques. I have more than 3 years experience in the same. Thanks

$66 USD trong 1 ngày
(2 Nhận xét)
2.4
VinitPunjabi

Hi, Good Morning. I am Introduce myself about my skills and work procedure for IT Related Works. I have to process manner is a Corresponding with client , Timely Deliver , Focus on Client Requirement, Find the Root Thêm

$155 USD trong 3 ngày
(5 Nhận xét)
2.1
ITExpert03

Hello, I can help you . I am a Security expert with 10 years of Professional experience. I am Certified Cisco Engineer with 10 Years of working Experience with Google Inc , T-Mobile USA and Fedex Corp . Certifica Thêm

$222 USD trong 3 ngày
(1 Nhận xét)
1.0
saseen18

working the gov sector where cent OS is used in gov office so no issue in solving your issue ill work on it within hours

$66 USD trong 1 ngày
(0 Nhận xét)
0.0
avrsolution1980

we are a team of Network and Server Security, and we are very confident & expert in this field. we had worked on Linux, MAC and Windows Operating System and good experiance in security & speed optimization of email ser Thêm

$166 USD trong 3 ngày
(0 Nhận xét)
0.0
veerendrakushwah

At this time im working in datainfosys ltd. this company provide mail service(xgen plus). so i know very well how to create mail server and its security...

$111 USD trong 2 ngày
(0 Nhận xét)
0.0
tresociety

we have already done this work, if you want to see the result you can try a demo link: [login to view URL] Email: demo at [login to view URL] Password: prova0987

$40 USD trong 2 ngày
(0 Nhận xét)
0.0
mysoulkavi500

Hello, As per your requirement. I will be perfect and suitable for this project. I have more than 6 years experience in Network administration, CCNA, ISP, ASP.NET and the .NET Framework using C#, HTML, JavaScript, Thêm

$155 USD trong 3 ngày
(0 Nhận xét)
0.0
amitac824

I can do

$155 USD trong 3 ngày
(0 Nhận xét)
0.0