Network & System Administration

2 tasks on the same mission (tasks are related)

The problem :

We do have problems to receive and send emails. When we send emails, they are going to the recipient spam folder. When senders send us emails, some of them are not delivered and the sender is getting an error and can’t sent us any email.

We think that this problem is coming from different elements. SPF and dns setting in our primary dns servers, lake of SSL certificate in Cgpro (TLS), CGpro wrong or incomplete relaying settings, maybe something else?

Our environment :

CGpro (Stalker communigate pro server) on linux

[login to view URL] is a secondary dns server (dedicated to dns task) running a Perl script to get all zones from our 7 other primary dns servers and work as secondary (slave) dns server.

Those 7 other plesk servers are hosting our domains and also other clients domain names. here are the 7 servers :

[login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL], [login to view URL]

Explanation of our architecture : We are providing domain name registration. Each new domain is registered with one of our 7 primary servers + [login to view URL] as secondary. The zones are created from a template in our primary servers and [login to view URL] Perl’s script is synching zones by getting a new copy twice a day from our primary servers. It’s working fine when the domains are hosted on the primary servers. Only our own 4 domains are using copra email server which is outside from the primary server (which also host web and email services for them).

Our need :

We need you to :

- subscribe and install a free or the lowest cost SSL/TLS certificate in our CGPro server and use it for all our domains in CGPro mail server. we don’t want to have a separate TLS certificate for each domain. We want to use a single certificate for all our 4 domains on CGPro server.

- check and configure the dns records for 4 domains (SPF, MX, A or TXT entries) to have the best deliverability performance. You can provide the instructions to modify for each of those 5 domains DNS records and i will do those changes.

- check the perl script (very easy script) located on our secondary dns server ([login to view URL]) because for some reasons, when one of the primary servers don’t answer, the zones are not completely replicated. This script was designed to avoid this but for some unknown reason it seems that it delete all zones in the beginning of it’s synchronisation before making sure that it can get access and replicated all zones. We faced a recent problem where many of websites didn’t work anymore because the primary was down and no dns zones were located in dns2. After we forced the sync manually, we got all zones and all domains went back online.

Here is a content of an email generated by the script when the job was correctly done

Subject: [SUCCESS]Test Access DNS 04/01/19-13:10:47


04/01/19-13:10:04 - [login to view URL] OK

04/01/19-13:10:07 - [login to view URL] OK

04/01/19-13:10:39 - [login to view URL] OK

04/01/19-13:10:42 - [login to view URL] OK

04/01/19-13:10:45 - [login to view URL] OK

04/01/19-13:10:46 - [login to view URL] OK

04/01/19-13:10:47 - [login to view URL] OK

if one server is not synched :

Subject: [ERROR]Test Access DNS 04/01/19-17:13:58


Erreur [login to view URL]

04/01/19-17:13:13 - [login to view URL] OK

04/01/19-17:13:45 - [login to view URL] OK

04/01/19-17:13:48 - [login to view URL] OK

04/01/19-17:13:51 - [login to view URL] OK

04/01/19-17:13:57 - [login to view URL] OK

04/01/19-17:13:58 - [login to view URL] OK

If you are expert with Stalker Communigate Pro email server, SSL/TSL installation, and configurations, Bind, DNS settings such as SPF etc… and Pearl language for the script you can help us.

DNS knowledge is very important

Evner: Apache, Debian, Linux, PHP, System Administrator

Se mere: network systems administrator jobs, system administrator, system administrator salary, network systems administrator salary 2017, network and computer systems administrators skills needed, network administrator, network and computer systems administrators certification, system and network administration pdf

Om arbejdsgiveren:
( 1 bedømmelse ) nice, France

Projekt ID: #18481739

15 freelancere byder i gennemsnit €41/time for dette job


Thanks a lot for taking your valuable time to read my message. After browsing your job description, I am very interested in your project and I believe I’m qualified for the task. Regarding PHP, I have +8 years Flere

€40 EUR / time
(225 bedømmelser)

Hi, I will install a free or the lowest cost SSL/TLS certificate. -configure the dns records for 4 domains (SPF, MX, A or TXT entries) to have the best deliver ability performance. -make cluster set up so tha Flere

€36 EUR / time
(305 bedømmelser)

Greetings, I'll install lowest cost ssl on your domains and will do necessary scripting utilizing you pearl script. I am expert software developer withloo hands on experience on networking and technical support qorks Flere

€42 EUR / time
(21 bedømmelser)

Hi there, My name is steve and i run a boutique Web design agency in brisbane. I currently manage my own network M, and I believe I could help with your problem. Kind Regards Steve

€58 EUR / time
(44 bedømmelser)

Hi I will resolve the issue of email sending or receiving as per your requirement and have expertise in the relevant field.I have 9 years of experience. Regards

€36 EUR / time
(275 bedømmelser)

Hi, my name is Oleksii. After reviewing your request, I am ready to fix you problems with email delivering. I have 19 years’ experience in System Administration and Programming. I would like propose partnership w Flere

€40 EUR / time
(53 bedømmelser)

Hi, I will install and configure SSL on site to make it secure. I have more than 10 Years of expertise in setup and management of different Linux web hosting servers like CentOS, RedHat, Ubuntu, Debian etc. web h Flere

€36 EUR / time
(84 bedømmelser)

Hi, I will check the reason for mails going in spam and will resolve spamming issue. I will also fix the server configuration so that mails should be sent and received. I will also fix ssl issue on the server and Flere

€36 EUR / time
(111 bedømmelser)

8+ Year Experienced Expertise in server management, Migration services, VPS, Dedicated, SSL Certificate, AWS, DNS, CentOS, Cpanel/WHM/Plesk, Web panel, Apache, Debian, Nginx, Ubuntu, Power MTA, Interspire I am re Flere

€36 EUR / time
(102 bedømmelser)

Dear sir, I'm sure that I can complete your project 'Network & System Administration' as soon as possible. I am senior software developer and always provide fast service. I promise a high quality and punctual work :) Flere

€40 EUR / time
(8 bedømmelser)

Customer's satisfaction is my goal *** *** Also 100% Completion is happy of me and client. *** *** Rest is my creative idea and honest effort. *** Looking to be your Good Venture along with your project! Best Flere

€40 EUR / time
(17 bedømmelser)

Hello, There follows a proposal for the execution of the project. I have expertise in systems and network, I have worked with you infrastructure for more than 10 years. Do not accept the proposal send data to contact. Flere

€44 EUR / time
(2 bedømmelser)

Hello, Ilan here , hope all is well on your side . Will configure environment include isolated configurations for experience performance output on back-end as well. Looking forward hearing from you . LPIC , CEH , Flere

€50 EUR / time
(4 bedømmelser)

J'ai une expérience dans le domaine de services sous linux et je détiens un savoir-faire et travaillant en tant que analyste en cybersécurité, je saurai aussi apporter un plus pour évaluer le niveau de sécurité de l'en Flere

€40 EUR / time
(0 bedømmelser)

I haven´t used communigate before, neither i heard of it, but i´m used to email servers and the common issues (dirty/banned ips or subnet, lack of dkim, wrong spf values..) that block the emails in the receiver end. A Flere

€40 EUR / time
(0 bedømmelser)