Postfix Professionals & Consultants

Showing 212 freelancers

Postfix Professionals & Consultants

Showing 212 freelancers

  • Senior System Administrator, Security officer, Migration engineer, SSD

    SUMMARY Specialties: Information Technology / Internet / IT Division / Computer security/ Internet Services / System Administration/ Webmaster Support / Web Analysis/ SEO / SEM / Internet Marketing Web hosting services (SSD hosting solutions) EXPERIENCE: d(-_-)b Linux/Windows system administrator, Operations team EuroVPS/WebDomSolutions January … more

    SUMMARY Specialties: Information Technology / Internet / IT Division / Computer security/ Internet Services / System Administration/ Webmaster Support / Web Analysis/ SEO / SEM / Internet Marketing Web hosting services (SSD hosting solutions) EXPERIENCE: d(-_-)b Linux/Windows system administrator, Operations team EuroVPS/WebDomSolutions January 2012 - May 2013 Greece, Athens Responsibilities: - Tickets; - System administration and monitoring. Theoretical and practical skills: - Operating Systems: RedHat/CentOS/Fedora, Debian/Ubuntu, FreeBSD, Windows Server 2003/2008; - Virtualization: Virtuozzo, OpenVZ, VMware, Onapp Xen, Apache CloudStack; - Setup/configuration: nagios, kayako, racktables, confluence, observium, nginx, php-fpm, liteSpeed, Apache CloudStack, Hostbill, WHMCS, redmine; - Control panels: Plesk, WHM Cpanel. - Database Administration: SQL Server, MySQL, MariaDB ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ <( -'.'- )> freelancer SEO freelance October 2010 - March 2012 (1 years 6 months) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ o(^_^)o System Administrator / Techsupport Webintellects/Webhostgian/Jumpline/Webdomsolutions November 2010 - March 2012 (1 year 5 months) US, Ohio Responsibilities: - Live Chat support, Tickets; - System/Server/Control Panel administration; - Nagios monitoring; - Internet research and work with technical documentation. Operating Systems: * RedHat/CentOS,Fedora * Windows server 2003/2008 * VPS setup and configuration (Parallels Virtuozzo Containers); Advanced theoretical and practical skills in such areas: - Operating Systems: RedHat/CentOS/Fedora, Windows server 2003/2008; - Virtualization: VPS setup and configuration (Parallels Virtuozzo); - Security: Advanced knowledge of Linux security, Firewalls ( IPtables, CSF, APF, BFD, Fail2Ban), Encryption ( SSL), SSH, Host Security Auditing; - Software: Apache servers (versions 1.3.x/2.2), DNS (BIND 9), QMail, Sendmail, exim, LAMP, Plesk/Exim/Cpanel (installing/upgrading/maintaining), Drupal, Wordpress, Joomla, OsCommerce applications, Yum/RPM usage; - Database Administration: SQL Server 2003/2008, MySQL, MS access. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ b(^_^)d Internet Marketing Specialist || Web Analyst DCoM Soft, Inc. December 2009 – August 2010 (9 months) Responsibilities: - Internet Marketing strategy and tactics - Information architecture and Web site content planning - Research of partners - Internet Market Research - Research Usability Design - Online promotion of company's web-based products Skills: - Search Engine Optimisation (SEO) - Paid online Marketing / Pay per Click Management (PPC) - SEO Copywriting/Editing - Social Media Optimization and Marketing (SMO/SMM) - Experience running USA-targeted social Marketing - Writing press releases - Social networking (Twitter, Facebook, Google follow etc) - Google Products, AdWords/AdSense, Google Analytics, Webmaster tools, Google Merchant, etc. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ \(^_^)/ Customer Relations Representative || Advanced Technical Agent Ecommerce, Inc. May 2007 – October 2009 (2 years 6 months) Responsibilities: - Sales, billing and technical support in solving problems reported by clients; - Chat, helpdesk system, correspondence; - View, Adaptation, "repair" clients' sites; - Basic server/service diagnostic and reports to sysadmin department; - Internet research and work with technical documentation; - Work in team. Basic theoretical and practical skills in such areas: - Linux / Unix OS, Windows server 2000/2003, Windows XP/98; - Servers: Apache, bind, sendmail, ProFTP, MySQL, SQUID / SOCKS, MSSQL, Samba; - Easy coding: PHP, PERL / CGI, HTML, JavaScript, CF, ASP,. NET, C + +; - Widely used protocols (HTTP, HTTPS, SMTP, POP, IMAP, FTP (s), TCP / UDP, etc); - HSPHERE control panel (versions 2.3 and 3).  less

    wordpress plesk cpanel joomla nginx php centos nagios mysql network-administration security atlassian-confluence virtuoso openvz vmware-administration fedora ubuntu bash seo sem ftp exim qmail postfix ssl linux-system-administration lamp-administration database-administration windows-administration project-management virtual-assistant tcp-ip internet-marketing network-security google-analytics redhat-administration css unix-system-administration unix-shell virus-removal apache-administration phpmyadmin red5 00 more less
    • $28.88 HOURLY RATE
    • 5.0
    • 764 HOURS
    • UKRAINE
    • LAST ACTIVE
    • 16 PORTFOLIO ITEMS
    • 20 TESTS
  • Professional Server Help (Linux Administrator)

    Melbourne based System Administrator with expertise in Linux Server optimization, security and service deployment on VPS/Physical, Cloud Platforms(AWS,Rackspace). I believe in getting the job done with the best possible quality. Period. Clear timely communication with the clients … more

    Melbourne based System Administrator with expertise in Linux Server optimization, security and service deployment on VPS/Physical, Cloud Platforms(AWS,Rackspace). I believe in getting the job done with the best possible quality. Period. Clear timely communication with the clients and their team is always my priority. I have been working with all the major providers: Rackspace, Amazon, Softlayer, Godaddy, Hostgator, Bluehost, Linode, DreamHost, Mediatemple, Lunarpages. Expertise in Linux Administration is as follows (but not limted to) Server Distributions: RedHat, Centos, Fedora, Debian, Ubuntu, Gentoo, Suse, Mandriva, Opensuse, Knoppix, Slackware. Web servers: Apache, Lighttpd, Nginx, Tomcat File servers: Proftpd, Pureftpd, Vsftpd, Sftpd, TFTP, NFS, Samba DNS servers: Bind9, MyDNS, NSD Mail servers: Postfix(TLS,SASL), Exim, Sendmail, Qmail, Dovecot, Courier. Logging services: Syslog, Rsyslog, Syslog-ng Proxy servers: Squid(forward and reverse proxy), nginx, pound, lighttpd. Firewalls: Iptable scripts and Advance Policies Firewall with bruteforce detection. Firewall configuration: NAT, IP Masquerade Jabber servers: Openfire, Ejabberd, Djabberd Database servers: MySQL, Postgresql Backup: Bacula, bash scripts. VPN: PPTP Virtualisation: Openvz/Virtuozzo, Xen, Qemu, KVM, VMware Server, Parallels Workstation, Virtualbox headless, HyperVM. Monitoring: Nagios, munin, zabbix, zenoss Automation: Puppet(fan), custom bash scripts. Revision control: Git(fan), Subversion Package management: yum, rpm, dpkg, aptitude, apt-get, emerge Security: Nessus, John The Ripper, Tiger, PGP, GPG, nmap, Openvas, Snort, Ettercap, arpwatch, SSH, SSL, TLS, TCP Wrappers, Ethereal, dsniff, tcpdump, portsentry, rkhunter, chkrootkit, clamav, SPF, Spamassassin, domain keys. Cloud computing: Amazon (EC2, EBS, S3, CloudWatch), Rackspace services. Assessment tools: sar, vmstat, iostat, mpstat, netstat, iptraf, iftop, lsof, ntop, serverstats Misc services: NTP, Cups, DHCP, Dnsmasq  less

    lamp-administration apache-administration linux-system-administration postfix whm iis unix-shell mysql vpn nagios munin ftp cpanel plesk nginx postgresql lighttpd subversion puppet-administration ssh iptables drupal wordpress domain-migration mail-server-implementation openvz virtualization redmine amazon-ec2 amazon-web-services amazon-s3 rackspace-cloudservers virtuoso bash exim firewalls ssl centos ubuntu security email-deliverability-consulting mailenable ffmpeg atlassian-jira python rhel 00 more less
    • $40.00 HOURLY RATE
    • 5.0
    • 1010 HOURS
    • AUSTRALIA
    • LAST ACTIVE
    • 3 PORTFOLIO ITEMS
    • 1 TEST
  • Senior IT Consultant

    - Expert in information security management systems: Implementation of an information-security management system according to Norm UNE ISOIEC 27001, definition of security objectives, indicators, political security, code of best practice, risk management, treatment plan, control access definition, communications and operations, legal … more

    - Expert in information security management systems: Implementation of an information-security management system according to Norm UNE ISOIEC 27001, definition of security objectives, indicators, political security, code of best practice, risk management, treatment plan, control access definition, communications and operations, legal compliance, management policies incidents of security, CPD preparation, elaboration of contingency plans, business continuity plans, plans elaboration testing of the continuity plan, design of the applicability statement, product realization, actions preventive corrective action, internal audits, training delivery. - Expert in management of the information technology services systems: Introduction of a management system of information technologies services according to standard ISO 20000, elaboration of service processes delivery (capacity, continuity and availability, service levels, reports of service, security, TI budget), control process (configuration, change), delivery processes, solving incidents (problems) processes, business relationships process (suppliers) relations, internal audits, training. -Software process improvement: Implementation of ISO 15504/12207 (SPICE), internal audits, training. -Technological expert: design and implementation of networks architecture, information systems, backup policies, business continuity plans, servers administration (Linux, Unix, Windows, Mac Os), databases (Oracle, MySQL, Posgree), SharePoint, web servers (Apache, IIS), servers (Tomcat, JBoss, WebSphere) applications, ethical hacking (nmap, telnet, Shell script, ssh), vulnerabilities analysis and treatment (Nikto, Nessus, Acunetix, Grendel Scan).  less

    security systems-development ecommerce-consulting e-learning itil supervisory-skills iso-9001 iphone-app-development operating-systems-development linux-system-administration mac-os-app-development information-architecture process-architect moodle survey-design risk-management microsoft-excel informix tcp-ip vulnerability-assessment firewalls dns snmp solaris-administration oracle-database apache-administration apache-tomcat jboss java .net-framework postfix postgresql mysql unix-shell ms-dos-administration mantis eclipse xml html php javascript virus-removal 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 224 HOURS
    • SPAIN
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 3 TESTS
  • Linux Servers AWS Cloud Hosting Security CPanel Plesk VOIP PenTest

    Since 2001, I have been dedicatedly working with Linux Operating Systems & Open Source. Services Provided ::- Deployment, Configuration, Security, Hardening, Monitoring, Performance Tuning, Troubleshooting of Linux Server Roles AWS – Amazon Web Services Migration of Servers Hosting Panels like WHM/CPanel, Plesk … more

    Since 2001, I have been dedicatedly working with Linux Operating Systems & Open Source. Services Provided ::- Deployment, Configuration, Security, Hardening, Monitoring, Performance Tuning, Troubleshooting of Linux Server Roles AWS – Amazon Web Services Migration of Servers Hosting Panels like WHM/CPanel, Plesk etc Asterisk Dialers, VOIP and Call Center Solutions Customization of Linux Kernel & Distro with Rebranding Faculty of Post-Graduate Degree in Computer Sciences. Firewalls & Gateways Linux HPC - High Preformance Clusters Remote Server Support & Troubleshooting L3/L4 Security Auditing of Servers & Websites Cloud & Virtualization Technical Writing VPN - Site-to-Site, Road-warrior Vulnerability Assessment & Penetration Testing Kayako  less

    plesk whm cpanel lamp-administration vicidial trixbox asterisk vpn security penetration-testing mail-server-implementation apache-administration mysql postfix openvpn linux-system-administration redmine firewalls exim spamassassin awk unix-shell dns ssh ssl ubuntu technical-support technical-writing technical-documentation virtualization vmware-administration bacula mediawiki network-security nagios unix-system-administration snmp operating-systems-development magento windows-administration squid haproxy dhcp moodle samba ldap clustering apache-tomcat amazon-ec2 amazon-web-services subversion iptables svn git redhat-administration bash-shell-scripting xen-hypervisor 00 more less
    • $16.67 HOURLY RATE
    • 4.8
    • 981 HOURS
    • INDIA
    • LAST ACTIVE
    • 14 PORTFOLIO ITEMS
    • 4 TESTS
  • Experienced Windows Linux, Unix, Citrix, ESXi, Network Administrator

    Windows, Unix and Linux servers. Managing OS33 Cloud server, AWS, Deploying VDI, ESXi, Xenserver, Xenapp, XenDesktop, Avaya CallManager. Cisco, Netgear, HP Procurve, Fortinet, Watchguard, Sonicwall, Barracuda, Juniper Switch, Router, NSA configuration.

    linux-system-administration unix-system-administration qmail lotus-notes nagios vmware-administration adobe-photoshop adobe-illustrator technical-documentation technical-support windows-administration pfsense squid vmware-esx postfix citrix-xenserver citrix-netscaler 00 more less
    • $33.33 HOURLY RATE
    • 5.0
    • 5476 HOURS
    • BANGLADESH
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 10 TESTS
  • ✔ Sr. Network & System Administrator (UNIX,Linux,Cisco,Shell,Perl)

    Over last 8 years I have design & deploy wide range network and server system using Cisco networking, Open Source Operating System like Linux and BSD or Windows Server. My core competency lies in complete end-end management of network infrastucture. I … more

    Over last 8 years I have design & deploy wide range network and server system using Cisco networking, Open Source Operating System like Linux and BSD or Windows Server. My core competency lies in complete end-end management of network infrastucture. I am looking for opportunities to design, setup and maintain networking infrastructure. I have extensive experience in Perl/Shell Programming, open source server applications such as integrate and modify, TCP/IP networking, Cisco Switch and Router, IT broadcast equipment such as SAN/NAS video server, digital media editing, project management and documentation  less

    unix-system-administration linux-system-administration dns postfix qmail 00 more less
    • $20.00 HOURLY RATE
    • 4.6
    • 402 HOURS
    • INDONESIA
    • LAST ACTIVE
    • 4 PORTFOLIO ITEMS
    • 9 TESTS
  • the art of System Administration

    I have been a Linux enthusiast since 1995, and I've been working as a system administrator on Linux servers for the last 10 years. I am certified with a Linux Professional Institute level 2 certification. I think that the … more

    I have been a Linux enthusiast since 1995, and I've been working as a system administrator on Linux servers for the last 10 years. I am certified with a Linux Professional Institute level 2 certification. I think that the most important factor in systems administration is the ability to face new problems and to adapt to the ever-changing challenges of technology, networking and security. The true skills of a good system administrator emerge when facing a task he/she has never solved before. My working philosophy: to always prefer long-term well documented solutions to quick ad-hoc fixes; to stick to published standards as much as possible; to strive to implement solutions that are elegant as well as practical. I love documenting what I do and I will be happy to share knowledge with my employers if they so require. My main areas of expertise: - HTTP servers (Apache, Nginx) and FTP servers (proftpd) - Mail systems (Postfix + LDAP, Dovecot, Amavis, Spamassassin, SPF and DKIM managing) - Amazon Web Services (EC2, S3, Route 53, RDS) - LAMP stacks - Firewalls (Iptables, Firehol, Apache mod_security) - Integrated solutions (iRedMail, Bitnami Stacks ...) I can communicate fluently in English, Spanish, Catalan and Italian.  less

    linux-system-administration mail-server-implementation apache-administration postfix ftp 00 more less
    • $38.89 HOURLY RATE
    • 4.9
    • 155 HOURS
    • SPAIN
    • LAST ACTIVE
    • 1 PORTFOLIO ITEM
    • 6 TESTS
    GROUPS:
  • Network & Security Engineer,programmer

    Servers setup, network setup, performance optimization, troubleshooting, maintenance, automation, documentation. Any kind of hardware and software for Unix-like operating systems. Web, DB, Mail, DNS, Firewall, etc... I would like to offer you my deep knowledge of servers hardware and software … more

    Servers setup, network setup, performance optimization, troubleshooting, maintenance, automation, documentation. Any kind of hardware and software for Unix-like operating systems. Web, DB, Mail, DNS, Firewall, etc... I would like to offer you my deep knowledge of servers hardware and software, which allows me to fine-tune servers according to their roles, and my ability to anticipate and solve problems in shortest time possible. windows or Linux no problem... Over the last 5 years I have developed a lot of desktop and serverside applications using C, C++, Java, SQL, PL/SQL, MYSQL languages for small business in Morocco and france  less

    c c++ java php assembly-language html css linux-system-administration firewalls cisco-asa cisco-routers cisco-ios apache-administration mysql oracle-database vmware-administration penetration-testing data-backup load-balancing network-security dns ftp postfix dhcp mail-server-implementation whm whmcs cpanel tcp-ip security lamp-administration 00 more less
    • $22.22 HOURLY RATE
    • 5.0
    • 0 HOURS
    • MOROCCO
    • LAST ACTIVE
    • 0 PORTFOLIO ITEMS
    • 4 TESTS
  • Linux System Administrator

    10 years of Linux system administration. Distro: RHEL, CentOS, Debian, Ubuntu, XenServer, Solaris Skills: AWS, Xen, Proxmox, XenServer, BIND, Nginx, FastCGI, Apache, Lighttpd, Varnish, Squid Proxy, MySQL, Kannel, Zimbra, Postfix, Qmail, Dovecot, DRBD, Linux-HA Hearbeat, Monit, Snort, BASE, Tripwire, Samba, NFS, MailScanner, Squirrelmail, Joomla, BASH, CSS, PHP, HTML, PERL

    lighttpd linux-system-administration nginx mysql dns squid joomla samba postfix apache-administration load-balancing solaris-administration varnish-cache 00 more less
    • $8.89 HOURLY RATE
    • 4.7
    • 26 HOURS
    • PHILIPPINES
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 7 TESTS
    ASSOCIATED WITH:
  • The Linux Professional

    Considered the founder of the r3infotech,R3INFOTECH is a leading provider of Computer Hardware and software applications’ design, development, testing and deployment. R3-Infotech was formed with the objective to develop great products and back them with world-class support in Open … more

    Considered the founder of the r3infotech,R3INFOTECH is a leading provider of Computer Hardware and software applications’ design, development, testing and deployment. R3-Infotech was formed with the objective to develop great products and back them with world-class support in Open Source. Formed in 2012, we set a goal to develop products and services in Custom Software Development, Application Development, Web Application Development, Software Outsourcing, Ecommerce web site design, Web Marketing, Website Design, Software Maintenance, Hardware installation and maintenance, data recovery and Server configurations. Our goal is to deliver premium quality Software and Hardware services while giving unmatched value to enterprises worldwide at an affordable cost.  less

    data-recovery computer-networking dns dhcp squid postfix sendmail mail-server-implementation apache-administration apache-tomcat oracle-database php drupal wordpress ssl centos ubuntu customer-support online-help jboss openvpn vmware-administration network-security ftp cpanel samba ssh amazon-web-services whmcs phpmyadmin amazon-ec2 linux-system-administration 00 more less
    • $20.00 HOURLY RATE
    • 4.9
    • 153 HOURS
    • INDIA
    • LAST ACTIVE
    • 7 PORTFOLIO ITEMS
    • 10 TESTS
    ASSOCIATED WITH:
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