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Qmail Upwork freelancers typically receive a client rating of 4.83.

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Last updated: June 1, 2015

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  1. Kundan S.

    Kundan S.

    System/Network Engineer

    Nepal - Last active: 1 day ago - Tests: 4 - Portfolio: 1

    I have been doing the system/network administration for last 6 years. My core area of work involves setup, maintain and troubleshoot system and network administration. I had successfully implemented and troubleshoot various system and network administration. My work platform includes (but not limited to ) Microsoft, Cisco, VMware, Citrix, Linux, IBM, SAN, Veritas etc. Below are the services which i have been providing to the organizations Microsoft platform : Active directory on w2k/w2k3/w2k8. IIS 6/7 web server/application server/file server/ smtp component for relaying. Certificate services as PKI in w2k/w2k3/s2k8. Visual SVN as subversioning and repository. Exchange 2003/2007/2010 and MDaemon for messaging solutions. WSUS, RDS, Terminal Services, Hyper-V DNS, DHCP, RRAS, Network Policy services. IPSec services PPTP and L2TP VPN Server. Kernel Debugging with Microsoft Debugger and kd tools SQL server 2008 Database administration. VBscripting for standalone and Active Directory environment. Linux services: LDAP with and without samba server. Qmail, postfix, Exim and sendmail as message transfer agent. Dovecot and courier as IMAP and POP3 server. smtp-auth, spamassasin, SPF with linux MTAs. Apache as webserver, apache and git as version control server . ssh server with and without password (with certificates and passphrase). VNC , screen as terminal services. oracle, mysql and postgresql on linux/unix. IPsec site to site and ssl vpn using freeswan, openswan and racoon. linux as firewall gateway using bash/perl gateway along with iptables, psad, and snort. bandwidth shaping policing services using htb and tcng. Voice server based on sip with h.323 support based on asterisk (trixbox, elastix, go-autodial ) with vicidial. quagga/zebra as advanced routing solutions. squid 2/3 cpanel/whm Amanda/zamanda/Bakula/rsync for backup services TCP Wrappers for hardening linux security. ext3/ext4/JFS on linux. puppet as configuration management. clonezilla. Debugging linux problems with signal trapping using bash scripts Networking : OSPF,EIGRP,RIP,BGP routing on cisco, juniper and open source in linux. Acess lists on cisco routers and security appliances (pix/asa). static and Dynamic NAT on cisco, juniper and open source linux/unix. L3 routing in cisco switches. SCCP/SIP in cisco CME, and call manager. INter vlan routing, site to site vpn, PPP/HDLC wan protocols, route summarization, equal/non equal cost load balancing. server virtualization on openvz, proxmox VE, KVM, XEN, citrix, vmware etc. desktop virtualization using citrix xendesktop and vmware view. App virtualization using citrix xenapp and vmware thinapp. user virtualization using citrix profile unity and appsense environment manager. ISCSI and Fiber channel based storage. IBM infosphere guardium for database security and data compliance CA identity minder and site minder. ...

    $11.11 /hr
    16 hours
    0.00
  2. MD EASIN

    MD EASIN

    Linux System Administrator

    Bangladesh - Last active: 15 days ago - Tests: 5 - Portfolio: 3

    I specialize in Linux Server Administration (WHM / DirectAdmin / Virtualization / RAID LVMs) Automation / OMNEON / Octopus / Exchange / FTP / HTTP / QMAIL / PROXY /NTP / VPNs(PPTP) /SAMBA /XEN-Server /pfSense / Mikrotik Servers. Terms of Services) • 99 Day Error Free Gaurantee Service • 100% Customer Satisfaction • Guaranteed Refund if not satisfied • Good communication availability 24/7

    $10.00 /hr
    0 hours
    0.00
  3. Nikolay Vasilev

    Oracle DBA

    Bulgaria - Last active: 10/13/2014 - Tests: 2 - Portfolio: 1

    Oracle DBA with 3 years experience supporting, designing and developing database systems. Professional strengths include database technology expertise, team leadership, ability to adapt quickly to fast pace of technology development, team player, excellent problem solving skills and ability to achieve corporate objectives in challenging work environments. Personal strengths include self motivation, quickly adopt new technologies and technical means, self study and good team player. Experience Includes: • Oracle DBA (Development through Production) ; SQL DBA (Production) • Database Backup/Recovery • Database and Application Server high availability solutions • Database Capacity Planning • Database Support Infrastructure Design • Application Servers Support Infrastructure Design • Database and Application Servers Performance Tuning • Project Planning, Development & Delivery Specialties: OS - Windows, Linux, AIX, Oracle Linux Databases • Oracle Database 10g,11g • RMAN • SQL • TOAD, PL/SQL, Oracle Enterprise Manager • INSIS - insurance business software Other Oracle Products - Oracle Application Server and Weblogic Server Virtualization - VmWare ESX server, Microsoft Virtual Server, Oracle VM Services - HTTP(Apache,IIS), FTP, EMail Server (Qmail, Sendmail, Microsoft Exchange Server) Windows Servers - Active Directory, Domain Cotrollers, DNS, DHCP, DFS Networking - TCP/IP, BGP, OSPF, RIP

    $100.00 /hr
    0 hours
    0.00
  4. Konstantin K.

    Konstantin K.

    IT Pro

    Russia - Last active: 12/03/2014 - Tests: 3 - Portfolio: 12

    Programming languages: - Perl (Linux/Windows) - PHP - JavaScript (NodeJS, jQuery, AngularJS, Qooxdoo, MooTools etc.) - SQL (PostgreSQL,MySQL, DB2, etc...) - ASP (VBS) - Delphi (Lazarus, Kylix) - Visual Basic - Python - HTML5/CSS3 - C/C++/C# (Linux/Windows) Os's (Administration): FreeBSD, Linux (Debian, Suse, CentOS etc.). - 8 years: Mail: postfix, cyrus, spam-assassin, amavisd-new, squirrel-mail, round-cube ... Web: Apache, Nginx, Perl, Php, HTML5, Javascript ... Other: Squid,VPN(mpd,openvpn, ipsec), bind,DHCP, NAT, CARP, Zabbix, nagios, monitis, clusters, ftp ... Firewalls/Filters/Monitors: ipfw, pf, Snort DBMS/DB: MySQL, Postgres, FireBird, DB2, SQLite ...

    $22.22 /hr
    10 hours
    0.00
  5. Kamal Desoky

    Kamal Desoky

    Linux system administrator

    Egypt - Last active: 11/17/2014 - Tests: 3

    I have been working as a Linux Server Administrator with many servers,doing administration of Linux systems,designing and structuring servers,vps and related issues. I have a relatively previous experience on: -Linux System & Network Administration. -Performing installations and operations of Linux distributions. -Configuring and implementing Web servers (APACHE) and virtual hosting. -Network and web security such as: Vulnerability Assessments, Hardening servers, Penetration testing, web security, fail2ban, SNORT, Tripwire-AID, mod_security, mod_evasive, Denial of Services (DDOS), Firewalls (iptables). -CMS (Joomla) installation, configuration, administration and mysql database related. -Deploying and maintaining Monitoring systems such as: nagios -MySQL database administration. -Resolve hardware and software-related problems, as well as perform system backup and recovery. -Good ability of Installing and configuring Virtualization Xen, OpenVZ. -Ability to compile linux packages from source code. -Bash scripting.

    $30.00 /hr
    0 hours
    0.00
  6. Reynold PJ

    Reynold PJ

    Senior Linux Server Administrator

    India - Last active: 08/20/2014 - Tests: 4

    I am working as a Senior Linux Server Administrator and have more than 4 years of experience in Webhosting industry. I have got the following certifications in hand currently, 1) Parallels Certified Virtualization Professional - Parallels Virtuozzo Containers for Linux 2) Parallels Certified Automation Professional - Parallels Operations Automation (PCAP POA) 3) Parallels Certified Automation Professional - Parallels Plesk Panel for Linux (PCAP PPP Linux) 4) Cpanel Certified 5) CCNA I love working in Linux (both debian and redhat based ) and my career goal is to become a Linux System Architect. More details about my work experience and client recommendations is available at my linkedIn profile, http://www.linkedin.com/pub/reynold-p-j/17/10a/2a

    $22.22 /hr
    0 hours
    0.00