Postfix SMTP Server Professionals & Consultants

Showing 431 freelancers

Postfix SMTP Server Professionals & Consultants

Showing 431 freelancers

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Last updated: April 1, 2015

  • System Administrator (AWS/LAMP/Windows/Linux/Virtualization/Clouds)

    Obliged to move from Crimea, Ukraine and now settled in Thailand. Now I have fully functional account and ready for hiring. Expert in AWS, Site migration, LAMP, Windows and Linux Servers setup and administration (incl. HA and clustering), Infrastructure monitoring … more

    Obliged to move from Crimea, Ukraine and now settled in Thailand. Now I have fully functional account and ready for hiring. Expert in AWS, Site migration, LAMP, Windows and Linux Servers setup and administration (incl. HA and clustering), Infrastructure monitoring. 100% positive feedback. I have 7 years of team work experience as system administrator. I'm quick learner, I like self-education and improvement of professional knowledge, self-motivated and self-organized. Have experience in deploying and maintaining of: Cloud Computing Platforms: Amazon Web Services (EC2, S3, RDS, VPC, Elastic Beanstalk etc); Server operating systems: Windows Server 2003 - 2012R2, Amazon Linux, Debian, RHEL, CentOS, Ubuntu Server; Web servers and servlets containers: IIS, apache, tomcat, JBoss, IBM Websphere; Mail servers: postfix, MS Exchange, IIS SMTP, hMailServer, cyrus; Database servers: MySQL, MS SQL, Oracle DB, PostgreSQL, MongoDB, DB2; Virtualization: MS Hyper-V, MS Virtual Server, VMware Server, Xen Server, VirtualBox, OpenVZ; Directory service: Active Directory, OpenLDAP; Ticketing systems: mantis, jira, redmine, trac, freshdesk, Trello; File servers: IIS FTP, proftpd, FileZilla FTP Server, samba; Firewalls: ufw, Windows firewall, iptables, firewalls on MikroTik and other routers; IT Infrastructure Monitoring: nagios, Pingdom; Webhosting Control Panels: WHM/cPanel, Webmin, Directadmin; Proxy Servers: squid; VPN Servers: pptpd; Collaboration version control systems: github, svn, cvs; Clustering: MySQL on DRBD, Heartbeat, MongoDB Replication, RabbitMQ; Continuous integration systems: Hudson/Jenkins, Apache Continuum; Instant messaging servers: ejabberd; Message brokers: RabbitMQ (include clustering); Enterprise Content Management Systems: MS SharePoint, EMC Documentum, OpenText LiveLink, Lotus Notes, Oracle Content Database and Oracle Records Database; Customer Relationship Management Systems: MS CRM, Odoo; Rapid web application development platforms: Adobe ColdFusion.  less

    amazon-web-services amazon-ec2 amazon-s3 virtualization windows-administration linux-system-administration apache-administration lamp-administration mysql postfix 00 more less
    • $18.00 HOURLY RATE
    • 5.0
    • 74 HOURS
    • THAILAND
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 4 TESTS
  • Senior system administrator and PHP - C - Perl developer

    Very skilled Unix system administrator, with lot of experience in Linux ( Centos, Redhat, Fedora, Ubuntu, Debian, Gentoo, Slackware ), Solaris, xBSD ( FreeBSD, OpenBSD), vpn ( openswan - ipsec, openvpn, l2tp, pptp ), clustering ( LInux Virtual Server, Linux HA, vrrp, Solaris Cluster ), cloud computing, load … more

    Very skilled Unix system administrator, with lot of experience in Linux ( Centos, Redhat, Fedora, Ubuntu, Debian, Gentoo, Slackware ), Solaris, xBSD ( FreeBSD, OpenBSD), vpn ( openswan - ipsec, openvpn, l2tp, pptp ), clustering ( LInux Virtual Server, Linux HA, vrrp, Solaris Cluster ), cloud computing, load balancing ( f5, haproxy ), VoIP ( asterisk ), databases ( MySQL, PostgreSQL), LDAP, web services ( Apache, Nginx, varnish ), security ( penetration testing, firewall policy design ), control panels ( CPanel, Plesk, Virtualmin, Ensim ), Virtualization ( VMWare Virtual infrastructure - VSphere, amazon EC2 ). As for Developing I am very experienced in C, PHP, Perl, javascript, ajax and many more to list.  less

    linux-system-administration mysql php asterisk audio-mixing audio-editing html css perl varnish-cache firewalls security network-security ipsec openvpn iptables penetration-testing postfix load-balancing pci-compliance cpanel zimbra-administration voip-administration 00 more less
    • $16.67 HOURLY RATE
    • 4.8
    • 1563 HOURS
    • GREECE
    • LAST ACTIVE
    • 2 PORTFOLIO ITEMS
    • 11 TESTS
  • System and Network Administrator

    Accomplished systems administrator with 10 years of experience on Server management and Security, WHM Hardening, Live Server Migrations, Critical Troubleshooting, Linux and Windows Server Installation and Configuration and Data-Center operations across multiple platforms (Unix, Linux and Windows). Expertise on - Zimbra … more

    Accomplished systems administrator with 10 years of experience on Server management and Security, WHM Hardening, Live Server Migrations, Critical Troubleshooting, Linux and Windows Server Installation and Configuration and Data-Center operations across multiple platforms (Unix, Linux and Windows). Expertise on - Zimbra - MS Exchange - Postfix and Exim based mail system - Hosted Exchange - Google Apps - Web Security - WHM/cPanel - AWS Services - DNS - vTiger/SugarCRM - Apache - Nginx - MySQL - IPTables  less

    linux-system-administration microsoft-small-business-server-administration mail-server-implementation microsoft-exchange-server zimbra-administration postfix domain-migration iis apache-administration cpanel amazon-web-services vmware-administration mysql php microsoft-sql-server-administration sugar-crm vtiger 00 more less
    • $13.33 HOURLY RATE
    • 4.9
    • 707 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 6 PORTFOLIO ITEMS
    • 6 TESTS
  • System Administrator / Web Developer

    Over the last 5 years, I have developed a wide range of websites using HMTL, PHP and MySQL including sites for startup companies and small businesses. Also, I've provide solutions for email marketing, web hosting, email servers, everything to … more

    Over the last 5 years, I have developed a wide range of websites using HMTL, PHP and MySQL including sites for startup companies and small businesses. Also, I've provide solutions for email marketing, web hosting, email servers, everything to ensure security, stability and delivery. Experience in: - DKIM - SPF - rDNS - BIND - Postfix - PowerMTA - Amazon SES - Nginx - Zimbra And many more... I also have some experience in the following areas: SQL, Ajax, Ruby, Java.  less

    email-marketing html interspire joomla lamp-administration linux-system-administration web-design facebook-api social-media-marketing windows-xp-administration centos adobe-dreamweaver adobe-photoshop email-deliverability-consulting mail-server-implementation postfix iptables qmail google-apps google-analytics google-adsense libreoffice amazon-web-services css3 dns html5 00 more less
    • $27.78 HOURLY RATE
    • 4.9
    • 603 HOURS
    • EL SALVADOR
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 0 TESTS
    ASSOCIATED WITH:
  • The Linux Professional

    I have been working as an Linux administrator for about 7 years. I am a Redhat Certified Engineer ( on RHEL6), RHCSS, RHCVA and CCNA. I am quite efficient and well versed with the system administration,server administration, corporate training of … more

    I have been working as an Linux administrator for about 7 years. I am a Redhat Certified Engineer ( on RHEL6), RHCSS, RHCVA and CCNA. I am quite efficient and well versed with the system administration,server administration, corporate training of Linux administration and security, troubleshooting and security implementation on Linux based systems . Area of my specialization are AWS, DNS, DHCP, PROXY, LAMP, NGINX, FTP, OpenStack TOMCAT, PUPPET, VIRTUALIZATION, VPS, NAGIOS, Shell Scripting and MAIL servers with cpanel/WHM, plesk, ISPconfig, webmin and virtualmin.  less

    rhce linux-system-administration centos dns dhcp squid mail-server-implementation postfix network-administration mysql oracle-database ssl ftp samba ldap computer-repair ssh apache-administration apache-tomcat network-security mono amazon-web-services virtualization cpanel plesk crm iptables firewalls 00 more less
    • $22.22 HOURLY RATE
    • 4.5
    • 194 HOURS
    • INDIA
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 15 TESTS
  • Computers and Servers Technical Support

    1. I have knowledge working with graphics environment Linux Systems and terminals with different Linux distributions (CentOS, Fedora, Ubuntu, Debian, Kubuntu). 2. I know how to configure GNU / Linux Web Administration's interface (Webmin). 3. I have knowledge working with … more

    1. I have knowledge working with graphics environment Linux Systems and terminals with different Linux distributions (CentOS, Fedora, Ubuntu, Debian, Kubuntu). 2. I know how to configure GNU / Linux Web Administration's interface (Webmin). 3. I have knowledge working with Windows Operating System (Installation, Update & Configuration, etc.). 4. I can give Hardware Technical Support with Personal Computers or Servers (changes Motherboards, Processors, Graphics Cards, Memory RAM, etc.). 5. I can work with installation, configuration and upgrade BIOS. 6. I have Web Programming Knowledge with HTML/XHTML, CSS, and PHP. 7. In working with Linux systems, I can install, upgrade and configure different services to Servers GNU / Linux, such as Samba, Postfix SMTP, Dovecot IMAP/POP3, DHCP Server, Apache HTTP, Shorewall Firewall, SSH, Telnet, and more.  less

    apache-administration linux-system-administration centos windows-administration phpmyadmin firewalls network-administration computer-networking postfix ubuntu 00 more less
    • $7.78 HOURLY RATE
    • 4.7
    • 147 HOURS
    • HONDURAS
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 TESTS
  • Linux Admin / Freelaner SystemAdmin /AWS Ec2/ Nginx /WordPress/Magento

    I have been Server Admin and Web Developer for over 10 years, I worked with many top-rated websites all over the world. I am expert with LEMP and LAMP system, very good at speeding up servers and sites. For some … more

    I have been Server Admin and Web Developer for over 10 years, I worked with many top-rated websites all over the world. I am expert with LEMP and LAMP system, very good at speeding up servers and sites. For some personal reasons, I MOVED back to Vietnam. I am also working at Elance and Freelancer. If you need references, please don't hesitate to contact me. http://vincosolution.com/ My Blog: http://blog.vincosolution.com/ My Linkedin: https://www.linkedin.com/profile/view?id=204192625 Security Portfolio: http://goo.gl/75iNSS http://sangte.blogspot.com/ Hall of Fame: https://www.apachefriends.org/about.html - Linux maintaince/troubleshooting (RHEL, Centos, Debian, Ubuntu, FreeBSD, gentoo, Mac OS X Server) - Windows Maintaince / Troubletshooting (Windows Server 2003-2012, Hyper-V, Lync, SharePoint Server 2010-2013) - Virtualization: (Vmware Esxi 5.x, Openvz, Virtuozzo, Xen, KVM, Vserver) - Cloud hosting (Amazon EC2, AWS, S3, RDS, simple Cache) - Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables/ipfw, qos, proxies, tcpdump) - Web servers (apache, nginx, lighttpd, tomcat, ssl installation and troubleshooting) - Caching ( apc/xcache/memcached/varnish/nginx) - Load Balancer (Nginx/Haproxy/Hardware LB) - Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin/amavis, courier, dovecot) - Bulk marketing (Dkim, spf, high speed/inboxing, interspire) - Automation (puppet, perl/shell/awk scripting) - Monitoring (nagios, zabbix, munin) - Hosting Control Panels (Cpanel/WHM, Plesk, Directadmin, ISPconfig..). - Mobile Application (Android / iOS / Windows Phone)  less

    linux-system-administration database-administration amazon-ec2 rackspace-cloudservers nginx varnish-cache memcached apache-administration mail-server-implementation network-administration openvpn subversion iptables whm cpanel plesk postfix exim ubuntu centos fedora squid bash security dhcp mysql virtualization amazon-web-services amazon-s3 unix-shell wordpress magento joomla 00 more less
    • $38.89 HOURLY RATE
    • 4.8
    • 1691 HOURS
    • VIETNAM
    • LAST ACTIVE
    • 12 PORTFOLIO ITEMS
    • 6 TESTS
    GROUPS:
  • Linux, Unix, Windows administrator, VmWare, Network, Technical support

    Linux, Unix, Windows system administrator, Virtualization, Networking. I have experience with: Amazon Web Services(EC2, S3, RDS), DigitalOcean, VoliaCloud OS: Windows, Linux, FreeBSD Virtualization: VmWare ESX, VmWare Workstation, VirtualBox, Proxmox, Hyper-V. Server panel: WHM/Cpanel, ISPmanager, Zpanel, Webmin Web-server: Apache … more

    Linux, Unix, Windows system administrator, Virtualization, Networking. I have experience with: Amazon Web Services(EC2, S3, RDS), DigitalOcean, VoliaCloud OS: Windows, Linux, FreeBSD Virtualization: VmWare ESX, VmWare Workstation, VirtualBox, Proxmox, Hyper-V. Server panel: WHM/Cpanel, ISPmanager, Zpanel, Webmin Web-server: Apache, Nginx DNS-server: Bind FTP-server: vsFtpd, Filezilla Mail-server: Postfix, hMail Web-client from mail: SquirrelMail, Roundcube Network equipment: switch, router, ADSL-modem, Wireless access point, etc. (Cisco, D-link, Mikrotik) VPN: OpenVPN, PPTP Proxy-Server: Squid, UserGate CMS: Wordpress, Joomla Server software: PHP, SSH, Cron And many more that are not included in this list  less

    linux-system-administration network-administration tcp-ip windows-xp-administration vmware-esx squid ubuntu openvpn virtualization apache-administration phpmyadmin dns ssh postfix cisco-routers wordpress redhat-administration vpn xmpp 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 64 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 6 TESTS
  • System and Network Administrator

    I have experience with Nginx (as web server, balancer, proxy and fastccgi proxy), Apache as web server and proxy, setting up php (as mod_php and fpm) and variety of php modules and runnig php , postgres, mysql and redis databases and … more

    I have experience with Nginx (as web server, balancer, proxy and fastccgi proxy), Apache as web server and proxy, setting up php (as mod_php and fpm) and variety of php modules and runnig php , postgres, mysql and redis databases and their backup solutions, replication and quick changes in databases, openvpn, cron jobs, ssl certificates, postfix, exim, securing ssh access, iptables, optimising db and web servers (varnish, memcached, caching content, setting expirations, apc, etc), setting permissions and users etc, tunning kernel parameters, setting puppet for centralized automated server deployment, using git, svn and mercurial repositories and to setup gerrit and make deployment automation, Jenkins, setting Symfony and Composer environments, Ruby (through rubyenv or system-wide). I also know to manage dns (clear bind9 or hosted dns solutions) and cdn services (liquidweb, cloudflare). About hosting solutions I have used since now AWS, storm-on-demand, server4you, hostgator, liquidweb. I am good with different cluster setups, separate db, app, balancer and other servers, securing connections between them etc. I also know to setup network file and printer sharing between different operating systems. I know to work with KVM, OpenVZ and VMWare virtualization. Provisioning, backup solutions, system setup, moving machines from one platform to other etc. About VPN I have experience with OpenVPN (with or without keys, LDAP auth, etc) and with Mikrotik PPTP VPN. Also I know to work with and to setup dynamic routing, dns, dhcp, access lists, static, routing, multi wan with failover, BGP, long distance wireless links, QoS, queues etc with mikrotik systems. I am head Network and System administrator at NSWireless community network located in Novi Sad, Serbia. I have experience with Debian, Ubuntu, Fedora, Red Hat, Centos, Arch, SUSE and other linux platforms. Complete setup and maintenance. I also have some experience with Mac OS X. About premade systems, I can set Worpress, Joomla, Magento, Redmine etc and tune their parameters and suggest environments for best performance. About panel solutions, I know to work with Plesk, WHM, CPanel, etc, but I prefer to use servers without these panels, so I use them only if it is your wish. I know to setup zabbix server for real time server and services monitoring, and munin for graphing. Thank you for reading, I hope that we will have good cooperation in administrating your servers.  less

    nginx apache-administration postgresql mysql database-administration clustering mono openvpn ssh data-backup virtualization dns puppet-administration load-balancing git linux-system-administration postfix unix-system-administration unix-shell bash centos ubuntu fedora opensuse amazon-ec2 amazon-s3 00 more less
    • $27.78 HOURLY RATE
    • 4.5
    • 302 HOURS
    • SERBIA
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 3 TESTS
  • System and Network Administrator (Unix, Linux, Windows)

    More than 8 years of experience in Unix, Linux, Windows systems. My Skills includes: - Unix/Linux/Windows Server Management - Clouds & VPS management (AWS, Linode, DigitalOcean) - Amazon web services expert (EC2, RDS, S3, VPC) - FreeBSD expert - RHEL/CentOS, WHM/Cpanel expert … more

    More than 8 years of experience in Unix, Linux, Windows systems. My Skills includes: - Unix/Linux/Windows Server Management - Clouds & VPS management (AWS, Linode, DigitalOcean) - Amazon web services expert (EC2, RDS, S3, VPC) - FreeBSD expert - RHEL/CentOS, WHM/Cpanel expert - FTP Server installation & Management - Remote Server Management - Apache/Nginx Server configuration & Management - PHP Install & configure - Database server (MySQL & PostgreSQL) Installation and Management - Mail Server Install and Configure (Postfix, Dovecot) - Live site Hosting - Ecommerce platforms (Magento) - Wordpress  less

    freebsd unix-system-administration linux-system-administration windows-administration vmware-administration network-administration unix-shell vmware-esx lamp-administration centos apache-administration nginx mysql tcp-ip postgresql php ftp ssh postfix mail-server-implementation raid-administration wordpress magento 00 more less
    • $20.00 HOURLY RATE
    • 4.7
    • 1349 HOURS
    • ARMENIA
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 5 TESTS
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