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Typical total cost of Upwork Postfix SMTP Server projects based on completed and fixed-price jobs.

Upwork Postfix SMTP Server Jobs Completed Quarterly

On average, 14 Postfix SMTP Server projects are completed every quarter on Upwork.


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Time needed to complete a Postfix SMTP Server project on Upwork.

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Postfix SMTP Server Upwork freelancers typically receive a client rating of 4.80.

Last updated: October 1, 2015

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Daniel Yavorovich

Daniel Yavorovich

System Administrator

Ukraine - Portfolio: 1

Operating Systems ● FreeBSD ● Linux Security ● iptables ● openssl ● jail ● clamav ● mod_security ● mod_clamav DNS ● Bind ● PowerDNS (+PostgreSQL / +MySQL) HTTP ● Apache ○ MPM: prefork, worker ○ mod_ssl, mod_php, mod_wsgi ● Nginx ○ Access control ○ Autoindex ○ Fast-CGI ○ uWSGI ○ Proxy ○ Cache ○ SSL ○ upload_progress_module ○ Control panel integration ■ Virtualmin ■ DirectAdmin ■ Plesk Proxy ● squid ○ basic auth ○ transparent proxy ○ cache ● 3proxy ○ http/socks ○ auth Raid ● Linux ○ md(0,1,5,6,10) ● FreeBSD ○ Gmirror / Striping File Systems: ● Ext 2,3,4 ● ReiserFS ● XFS ● OCFS2 ● ZFS (port to FreeBSD) ● CEPH CVS ● SVN ● Mercurial ● GIT ○ GitLab ○ GitoLite Backup ● rsync ● BackupPC ● Bacula FTP ● ProFTPd ● VSFTPD File sharing ● NFS ● SAMBA Control Panel ● Direct Admin ● Webmin+Virtualmin ● CPanel ● ISP-config ● Plesk Automatization ● Puppet ● Saltstack Monitoring ● Zabbix ● Nagios ● Munin ● Monit Network Understanding of theoretical and practical foundations of the networks (Data link, Network, Transport, Application Layers). VPN ● OpenVPN ● PPTP Database (SQL) ● MySQL (+MariaDB, +Percona) ● PostgreSQL Database (NoSQL) ● ElasticSearch ● Riak ● MongoDB ● Cassandra ● Redis Virtualization & Containerization ● KVM ● XEN ● OpenVZ ● LXC ● Docker ● Vagrant Cluster ● DRBD ○ master-slave ○ master-master (+ocfs2) ● Heartbeat ● Pacemaker Development ● actively use: ○ shell (bash, sh) ○ Python ● Frameworks ○ Django ○ Flask ○ Twisted ○ Tornado Cloud Solutions: ● AWS (EC2, S3, CloudFront, Route53) ● DigitalOcean ● RackSpace

100% Job Success
$33.33 /hr
46 hours

Offshoreit Support

Offshoreit Support Agency Contractor

CEO and Founder

India - Tests: 3 - Portfolio: 1

Offshore IT Support is a leading Technical Support Company that provides Outsourced 24/7 Technical Support, Remote Server Administration, Server Security, Linux/Windows Server Management, Server Audit and Helpdesk Management to Datacenters, Hosting companies and ISPs around the globe. With over 5 years experience in working with major hosting providers and data centers, Offshore IT Support is the first company of its kind who provides “Expert Call Back” feature to the customers. I have well rounded knowledge and hands-on experience in the following areas: Windows Servers Win 2003, Win 2008, MSSQL Server, IIS , Azure, Apache, IIS, Amazon Web Services, Dedicated Server, VPS. WHMCS. Linux configuration, maintenance & troubleshooting for RHEL, Centos, Debian, Ubuntu Virtualization: Vmware, Openvz, Virtuozzo, Xen, KVM, vserver, Cloud hosting: Amazon EC2, AWS, S3, Cloud Computing, Digital Ocean, VPS, Networking (dhcp, DNS:powerdns/bind/named, vpn: openvpn/pptp, firewalls: iptables, proxies), Web servers (apache, nginx, lighttpd, tomcat), Mail servers (exim, postfix, qmail, antispam/ antivirus: clamav/spamassassin, courier, dovecot), Hosting panels as Cpanel/WHM, Plesk, Directadmin, WebsitePanel.Webmin, DirectAdmin, Virtualmin & Vestacp SSL Certificates : Symantec, Digital certs, Go daddy. Verisign Thwart etc... Networking: Active Directory,Group Policy, DNS, DHCP, FTP, VPN, NFS, RAID, DHCP, DNS, DFS, VPN, WDS, RRAS, TS server, NAP, Proxy server, Windows Failover clustering,Network Load Balancing (NLB), Remote Desktop Services. Storage: Configure NAS and SAN, Openfiler NAS/SAN, Starwind SAN. Backup: R1 Soft, Windows NT Backup, Shadow Protect, Configure and troubleshoot the backup issues. CCNA: IP addressing sub-netting, IP Routing Routing Protocol, EIGRP, OSPF, ACL, Frame Relay connection, NAT/PAT, Virtual LAN, WirelessLAN.

Associated with: Offshore IT Support

$11.00 /hr
11 hours

Rahul M.


India - Tests: 5 - Portfolio: 3

Over the last 12+ years experience in the Linux and Messaging field: - Puppet Automation - Writing modules and custom providers -Email Platforms (Qmail, Postfix, Zimbra, Sendmail ) which includes deployment, Tuning and Migration. - Zimbra OSE/NE Specialist - Redhat clustering - load balancing and high availability - Monitoring (cacti, nagios, snmp,etc.) - DNS ( Bind , TinyDNS ) - nginx reverse Proxy - Regular Expressions - Perl/Bash/Python Scripting - Splunk Data Analytics

100% Job Success
$14.44 /hr
426 hours

Bogdan daniel S.

Bogdan daniel S.

VCP, MCSA, Exchange, Vmware, HyperV, Servers Expert Admin

Romania - Tests: 8 - Portfolio: 1

10+ years experience in Information Technology (IT) Major areas of expertise: VMware and Microsoft virtualization technologies. Designing and implementing fault-tolerant virtualization clusters SAN and NAS systems (iSCSI, FC) Windows 2003 / 2008 / 2012 Server * Active Directory * Microsoft ISA Server and TMG * Clustering * MS Windows XP/Vista/7/8 desktop/workstation operating systems * Centralized anitivirus systems WSUS * TCP/IP, Switching and Routing * Firewalls IBM, HP, Dell Servers * DNS, DHCP, Wins * Print Server * File Server * Network and Servers documentation * LAN hardware/software administration, design, installation and configuration * Print Server * LAMP Administration * Linux services : squid, postfix, dovecot, firewall, ldap, mysql, nagios, dhcp, bind etc Certifications: MCP - Microsoft Certified Professional MCSA - Microsoft Certified Systems Administrator VCP - Vmware Certified Professional VCP-510 * VCA-DCV - Vmware Certified Associate Data Center Virtualization.

Groups: Microsoft Certified Professionals

100% Job Success
$22.22 /hr
2,674 hours

Sergo Sarkisian

Sergo Sarkisian

Linux , Cisco ,Vmware , Voip, firewall , security specialist

Georgia - Tests: 18

I want to utilize my knowledge, skills and professional experience in order to contribute to the growth of the company I am working for whilst improving myself. SKILLS:network engineer ,system administrator(RedHat,CentOS,FreeBSD,OpenBSD,WIndows 2000,2003 server), cisco certified specialist(CCNA) Configuration of CISCO routers and switches,firewalls,servers:cisco 36xx,65xx, series,ASA firewall 55xx series, Implementation , configuration,design ,troubleshooting of basic routing protocols(BGP,EIGRP,RIP,OSPF,QoS,MPLS,HSRP,VRRP,GLBP) , Security: IPsec and many vpn solutions,certificate setup 1 Web servers - Apache 2.x,nginx,Squid proxy 2 Mail servers -Postfix,qmail ,sendmail,Mdaemon 3 FTP servers -WuFTPD,Vftpd 4 DNS –bind version 9 ,VPN (Openvpn, IPSEC implementation ) 5 DATABASES-Sql,mysql,postgresql,sqlite 6 LVM ,RAID(0,1,5,10) configuration 7 Experinece in network monitoring tools:Nagios,MRTG ,Cacti

Groups: Bluehost Developers and Designers

100% Job Success
$20.00 /hr
921 hours

Alexandru V.

Alexandru V.

Senior Linux Administrator

Romania - Tests: 4 - Portfolio: 2

* Fully manage the installation, configuration and troubleshooting of Linux servers * Install and configure Web Servers and MySQL * Install and configure customer scripts and programs * Monitor performance to identify and resolve issues using a suite of systems and tools. * Troubleshoot and resolve network, system, hardware and software problems. * Achieve quick fixes and / or long-term solutions as needed. * Maintain 100% customer satisfaction through all available means.

100% Job Success
$20.00 /hr
126 hours

Paulo Arruda

Paulo Arruda

Linux System Administrator and Network Specialist

Canada - Tests: 4 - Portfolio: 1

My 9 years of experience in Linux Server Administration and Deployment, and 15 years of experience as Linux User, should be of interest to a rapidly growing company like yours. I've been working for the past 9 years building all kind of servers: from SOHO file servers to large mail deployments in HA/Virtualized/Cloud environments.

Groups: LPIC-2

100% Job Success
$80.00 /hr
486 hours

Bhushan Kumar Sharma

Bhushan Kumar Sharma

Linux Servers AWS Cloud Hosting Security CPanel Plesk VOIP PenTest

India - Tests: 4 - Portfolio: 14

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

100% Job Success
$16.67 /hr
4,020 hours