Upwork home
Sign up
Secondary

Hire the best Postfix SMTP Server Specialists in Ukraine

Check out Postfix SMTP Server Specialists in Ukraine with the skills you need for your next job.
Get started
  • $190 hourly
    • 4.9/5
    • (508 jobs)
    Based on my 30 years of experience in the field of IT, i am able to complete complex tasks of high difficulty. Working in international corporations allowed me to have a practice with productive and expensive systems. Contracts in the banking sector has taught confidentiality and responsibility and the importance of trust. My main qualification is in system administration. From the direct assembly of the server to the configuration of the operating system. Therefore i have expert knowledge of operation systems Windows\UNIX. Server OS: Microsoft Windows server, RedHat, Ubuntu, CentOS, PopOS, Debian, other Linux.. Cloud: Amazon Web Services AWS, Google cloud GCP, Oracle cloud, Microsoft Azure, IBM cloud.. Hosters: Digital Ocean, Hetzner.. Virtualization: Hyper-V, VMWare, VirtualBox, KVM, Proxmox.. Emergency problem resolving. Web, VPN, VPS, Cloud, Virtualization. Hardware troubleshoting and repair. Security networking. Infrastructure protection. BIOS\FW recovering, updating.
    Featured Skill Postfix SMTP Server
    Microsoft Hyper-V Server
    System Configuration
    Virtualization
    Amazon EC2
    Data Recovery
    Disaster Recovery
    Virtual Private Server
    Hardware Troubleshooting
    Linux System Administration
    System Administration
    Server Virtualization
    Windows Server
  • $80 hourly
    • 4.9/5
    • (119 jobs)
    In my childhood, I spent a lot of time with a soldering iron, making different interesting things. At high school, I got a PC at home and it started... Dos, Win, Linux, FreeBSD. At the present time, I have more than 20 years of Win experience and more than 16 years of *nix experience. I like to build systems and solve interesting issues. OS - FreeBSD, Linux (CentOS, Alma, Rocky, RHEL, Ubuntu, Debian, Gentoo, etc), Windows (3.1-2019) Virtualization - vSphere 5.x, 6.x. Standalone ESXi and clusters with SAN storages (iSCSI). KVM, Proxmox, oVirt. Veeam BnR, XSI-backup. VmWare Workstation, VirtualBox. Web servers - Apache, Nginx, Lighttpd, Tomcat DB servers - MySQL, MariaDB, Postgresql, MongoDB Mail - Postfix, Courier/Dovecot/Cyrus, Rspamd, Postgrey, Clamav, PostfixAdmin, SquirrelMail, Roundcube, Sendy, AWS SES. I have experience with WHM/cPanel, Plesk, VestaCP, Virtualmin, ISPmanager, but I don't like control panels (most projects are optimized for best performance, and there is no place for CP). If needed, I can learn and work with any control panel. Samba3+LDAP, Samba4 domains (about 500 user accounts, GPO, Roaming profiles, a lot of other stuff). Standalone samba servers. Docker, docker-compose, Jenkins, Ansible. FreeNAS, TrueNas. Squid (LDAP auth, AD auth, basic auth, Kerberos), FTP, SFTP, DHCPD, BIND, TFTP, DAViCal, tinc, Strongswan, mpd5, OpenVPN, quagga, BGP, NFS, rsync, snapshot, rclone, Zabbix, SVN, GIT, Moodle, NextCloud, OnlyOffice, BigBlueButton, Caddy, etc. Dell servers, Dell PowerVault MD storages, HP servers, SuperMicro servers, and usual PC hardware. HP, 3Com, Dell switches, no Cisco experience. DD-WRT, including cross-compiling software from sources for this firmware for ARM arch. Shell, PHP scripting I have a lot of other expertise. Feel free to ask.
    Featured Skill Postfix SMTP Server
    VMWare
    Virtualization
    LDAP
    Dovecot
    Linux System Administration
    FreeBSD
    Windows Administration
    MySQL
    PostgreSQL
    DNS
    NGINX
    CentOS
    Linux
    Ubuntu
  • $199 hourly
    • 5.0/5
    • (61 jobs)
    I am experienced Linux Embedded Programmer, Linux/ARM BSP/firmware engineer (20+ years). I can use my broad expertise in Embedded software development to help your project to start or to break some tough ice, which stopped existing project. My other background includes: - seven years of experience in 4G – next generation wireless development. - experience with Agile methodologies of product development. - experience with WiMAX and LTE protocols stacks, LTE EPC protocols, LTE eNB - EPC protocols, various EPC and EPC emulation software (vendors: Aricent, PolarisNetworks, Radisys/Trillium). - solid experience in NTP/SNTP/PTPv2 (IEEE 1588v2) network time synchronization protocols. - solid experience in VPN protocols, especially IPSEC based on on StrongSwan on Embedded Linux A bit more details about my past works and experiences: Leaded development of complete 4G solution(MaxBridge) from start to completion, final product deployed in four countries. Experienced in Linux kernel device drivers/4G MAC-level programming and code optimization. Experienced in MAC-PHY communication. 4G QoS implementation and resource optimization. Experience in traffic convergence/encapsulation. Played one of Core role in the successful Carsify project - as Sr. Linux BSP Engineer Extensive experience in installation and administration of most common network OS and network security. Solid experience in building Video surveillance and event registration with precision time keeping devices, BSP optimization for AI on the Edge. Solid experience with BSP/kernel/drivers development/optimization for the small Linux SoC boards, such as Raspberry PI, Nano Pi etc. Can provide consulting service on remote work organization, DevOps tasks, moving infrastructure to a cloud, company email solutions, Stable Diffusion or other AI on EDGE related tasks.
    Featured Skill Postfix SMTP Server
    Adobe Photoshop
    Product Photography
    Firmware Programming
    Firmware
    Kernel
    Driver Development
    DNS
    Embedded System
    System Programming
    Embedded Linux
    C
    Wireless Communication
    System Analysis
    Email Deliverability
  • $28 hourly
    • 5.0/5
    • (9 jobs)
    Hi, I am a technical specialist in the field of system administration, with more than 10 years of experience. The scope of my services includes administration and support of Linux and MS Windows servers, virtualization, working with Mikrotik and OpenWRT, setting up data resilience, there is experience with Cisco. I will be glad to help you professionally with your tasks.
    Featured Skill Postfix SMTP Server
    Docker
    GitHub
    cPanel
    Backup & Migration
    Zimbra Administration
    Windows Administration
    Zabbix
    TCP/IP
    Kernel-based Virtual Machine
    Linux System Administration
    NGINX
    Ubuntu
  • $10 hourly
    • 5.0/5
    • (3 jobs)
    Hello. Introduce you to my skills. I have 8 years of administrating: - Linux (FreeBSD) and Windows servers and desktops. I have experience with: - webServers (apache, NGINX) - Mysql (MariaDB) - NoSQL (MongoDB) - Docker, Docker-compose - Github Action, - cPanel, VestaCP (HestiaCP) etc Network: - Firewall on Linux (iptables, uwf) - fail2ban - pfSence Mail: - postfix(exim) - dovecot - RoundCube - Poste.io, MailCOW, Mailu, ProxmoxMailGateway Virtualization: - Proxmox Cloud service - AWS EC2, S3 etc - CloudFlare
    Featured Skill Postfix SMTP Server
    Azure DevOps
    GitHub
    CI/CD
    AWS Systems Manager
    Docker
    Exim
    Network Administration
    Linux System Administration
    LAMP Administration
    Iptables
    Virtual Private Server
    MySQL
    PostgreSQL
    NGINX
  • $25 hourly
    • 5.0/5
    • (5 jobs)
    Experiance: 06/2002 - 05/2012 C++ and PHP programming and website development. Participate in, and contribute to the development of technical/business approaches and/or the recommendation of current system enhancements Configuring and installing Cpanel, DirectAdmin, ISPManager, Webmin, Apache, Nginx, IIS web servers, Mysql, MariaDB, MS SQL, mongodb Work with high-load projects, search for bottlenecks and speed up their work using server settings. PHP, JavaScript, css, html, c++ 05/2009 - present Script design and development Work closely and team with Developers Act as a subject matter expert for troubleshooting and resolving complex, multi-tier web problems that span a number of different platforms Working knowledge of standard Unix infrastructure tools/protocols. (DNS, NTP, SYSLOG, SSH, HTTP, Iptables etc.) Security incident response and perform necessary deep investigation and compromise containment Deploy and manage automated security services and third party solutions Automation of various web hosting tasks (bash for linux and powershell for windows). Design and development of tools to automate security or security reporting tasks Support ongoing and new security/compliance initiatives Search and elimination of errors in web applications, analysis of server logs and application logs. Traffic monitoring and analysis of web application logs and search for possible threats. Nagios, Cacti, Icinga Education: Master's Degree in Computer Science Skills Strong desire to eliminate ambiguity and produce predictability Good written and verbal communication skills Working in high-availability, 24x7x365 large-scale multi-data center environment Strong communication skills, both verbal and written in a large team environment PKI and Key Management knowledge and experience Ability to drive consensus and foster collaboration Basic cross-functional understanding of network engineering concepts and protocols (e.g., TCP, UDP, SSL, VLAN, BGP, etc.) Working knowledge of standard Unix infrastructure tools/protocols (HTTP, DHCP, DNS, SYSLOG, SSH, IPSec etc.) Extensive experience in administering openvz and HyperV, less kvm and xen servers. Experience with networking equipment: Juniper, Extreem Networks (BGP configuration, firewall rules, static routing). Strong analytical capabilities
    Featured Skill Postfix SMTP Server
    SSL
    Microsoft Hyper-V Server
    Kernel-based Virtual Machine
    System Administration
    Ubuntu
    OpenVZ
    Microsoft Windows PowerShell
    Bash Programming
    Cloudflare
    Microsoft IIS
    MySQL
    PHP
    Apache HTTP Server
    NGINX
  • $11 hourly
    • 5.0/5
    • (4 jobs)
    I am the system administrator with mail systems administration as the main area
    Featured Skill Postfix SMTP Server
    Email Support
    Mail Server Implementation
    CentOS
    DNS
    Bash Programming
    Sendmail
    FreeBSD
    Unix System Administration
    Python
  • Want to browse more freelancers?
    Sign up

How hiring on Upwork works

1. Post a job

Tell us what you need. Provide as many details as possible, but don’t worry about getting it perfect.

2. Talent comes to you

Get qualified proposals within 24 hours, and meet the candidates you’re excited about. Hire as soon as you’re ready.

3. Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

4. Payment simplified

Receive invoices and make payments through Upwork. Only pay for work you authorize.

Top cities for Postfix SMTP Server Specialists in Ukraine
Show more