Hire the Best Postfix SMTP Server Specialists
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👨‍💻Professional DevOps Engineer & SRE Engineer for 5+ Years with Servers, Databases, Networks, and Cloud experience! 👨‍💻Red Hat Certified System Administrator (RHEL 9) - Working more than 3300 Hours 💻 With the following qualifications:- ● ⚙️ System and software configuration, installation, deployment, optimization, troubleshooting, and automation. ● 🐧 Linux kernel management. ● OS 💿: Ubuntu, Debian, CentOS, Rocky Linux, Alma Linux, Red Hat Enterprise Linux (RHEL), Arch Linux, Manjaro, Proxmox. ● Web and Proxy services 🌐: Apache, Nginx 🄽, Varnish, HAProxy. ● Databases and Datastores 💽: MySQL🐬, MariaDB, PostgreSQL🐘, Redis, Memcached ● Self-hosted apps and Control panels: Control Webpanel (CWP), cPanel, Plesk, Webmin, Cockpit, Nextcloud, Confluence, Jira, WordPress, Git, Gitea. ● DNS: Cloudflare, PiHole, Bind, AWS Route53, experience with SPF, DMARC, DKIM, and PTR records for Email services. ● EMail ✉️: Mailu, iRedmail, Mailman, Postfix, Dovecot. ● Automation with Bash, Python, Web scraping, and Ansible ● Virtualization, Containers, and Cloud☁️:: Docker🐋, Kubernetes, K3s, QEMU/KVM, LXC, Proxmox VE, VMware ESXi, Hashicorp Terraform. ● Cloud Providers ☁️: Microsoft Azure, AWS, GCP, DigitalOcean, and Vultr. ● Object Storage 💾: AWS S3 and Wasabi ● Secrets & Certificates 🔏: SSL Self-signed Certificate and Certificate Authority, Let's Encrypt ( ACME.sh, Certbot, others), SSH PKI, Vault. ● Networking 🕸: TCP, HTTP, HTTPS, SSH, FTP, SFTP, SMTP, IMAP, POP3, FTPS, DNS, TLS, WebSockets, Tor onion routing, ngrok, ebtables, iptables, firewalld, iproute2, NetworkManager, netplan. ● VPN 🔏: OpenVPN, Wireguard, Tinc VPN, Outline VPN, OpenConnect, Anyconnect. ● Web scraping 🌐🕷️: Python requests, scrapy, beautiful soup, selenium. ● Development with Python 🐍, Bash scripting, Flask, SQL, HTML, JQuery, and JSON. ● Packaging 📦: Rpm, Deb, and Pacman.

I’m an IT Infrastructure Administrator with 8+ years of experience supporting businesses with domain management, cloud services (Google Workspace, Microsoft 365, Azure), and server administration (Windows Server, cPanel, VMware). I also specialize in email deliverability optimization, helping businesses improve inbox rates through: - Authentication setup (SPF, DKIM, DMARC, BIMI) - IP/domain warm-up planning - ESP tuning (SendGrid, Mailchimp, ActiveCampaign, Mailgun, Instantly, and more) - Spam placement/root cause analysis - IP and domain reputation management Core Skills: - Office 365, Google Workspace, Exchange - Microsoft Windows Servers, Active Directory, DHCP, DNS, Hyper-V - FortiGate Firewall Management, Security Systems - Backup & Disaster Recovery Planning - Email Deliverability Setup & Troubleshooting Goal: Deliver secure, optimized IT systems and help maximize email campaign success with higher deliverability and trusted sender reputation.

I'm a Senior Network Security Engineer and consultant trusted by government agencies, universities, and enterprises across Egypt to design, secure, and troubleshoot critical infrastructure — not just fix tickets. With 7+ years of hands-on and consultancy experience, including at Egypt's Council of Ministers, I bring senior-level judgment to every firewall, VPN, email security, and routing challenge. I specialize in firewall deployment and optimization (FortiGate, Palo Alto, FTD, Forcepoint), VPN solutions (IPsec, SSL VPN, FortiClient, Pulse Secure), and advanced routing technologies, including OSPF, BGP, MPLS, L2VPN, and L3VPN. I also have strong expertise in Email Security and Mail Gateway solutions — resolving complex delivery issues, configuring SPF/DKIM/DMARC, handling blacklist removal, SMTP relay setup, and DNS-related outages. I work with FortiMail, Postfix, Cisco Email Security Gateway, and Microsoft Exchange Server 2016/2019 in production environments. In addition, I have solid experience in Cisco Voice infrastructure, including CUCM, Cisco IM & Presence, Unity Connection, and Expressway — covering VoIP deployments, SIP trunk configuration, call routing, and secure remote access for collaboration environments. I help businesses and institutions: Secure and harden network infrastructure against real threats Deploy and optimize VPN solutions for remote and site-to-site access Troubleshoot complex routing and firewall issues at the root cause Resolve email delivery failures and DNS misconfigurations Deploy and secure mail gateways (FortiMail, Postfix, Cisco Gateway) Implement and troubleshoot Cisco VoIP environments Implement monitoring and SIEM solutions (Zabbix, QRadar, Splunk) Configure and secure F5 Web Application Firewall My approach is structured and results-driven: I identify the root cause, design a clean solution, implement with minimal downtime, and ensure long-term stability. If your network, email infrastructure, or security posture needs an engineer with government-grade experience and a consultant's mindset, I'm ready to help.

I build infrastructure that handles real production pressure — not just demos. With 3+ years of hands-on work across AWS, Azure, Huawei Cloud Stack,GCP. I’ve delivered end-to-end cloud solutions for clients ranging from enterprise private cloud environments to SMB server hardening and performance optimization. My work goes beyond setup. I troubleshoot live production issues, write full documentation, and make sure everything is maintainable long after I close the contract. ☁️ Cloud Platforms AWS (EC2, EKS, ECR, ECS, VPC, IAM, Load Balancers) • Microsoft Azure • Huawei Cloud Stack (HCS/CCE) • OpenStack • GCP 🐳 Containers & Orchestration Docker • Kubernetes (EKS, CCE, Minikube) • Helm • Air-gapped offline deployments 🚀 CI/CD & Automation Jenkins • GitHub Actions • GitLab CI/CD • ArgoCD • Ansible 🏗️ Infrastructure as Code Terraform • Automated provisioning • Configuration management 📊 Monitoring & Observability Prometheus • Grafana • ELK Stack • Alerting & Performance Analysis 🔐 Security & Reliability Linux Administration • SSH Hardening • UFW & Firewall • IAM & Access Control • DKIM/SPF/DMARC • Fail2Ban • Lynis 📧 Mail Infrastructure Postfix • Dovecot • Roundcube • MailCow • Email Deliverability & Authentication ✅ What I Can Do For You • Design and deploy production-grade AWS, Azure, HCS, and GCP infrastructure • Set up and manage Kubernetes clusters end-to-end • Build automated CI/CD pipelines from scratch • Automate infrastructure with Terraform and Ansible • Implement monitoring, alerting, and observability solutions • Harden and secure Linux servers and cloud environments • Deploy and manage mail servers with full authentication stack • Troubleshoot and optimize live production environments • Lead cloud migration and modernization projects 💡 Why Clients Work With Me Again • I communicate clearly and keep you updated at every step — no surprises • I focus on root causes, not quick patches — your system stays fixed • I document everything I deliver, so your team can maintain it • I treat your infrastructure as if it were my own • I work in real production environments, not just labs “Infrastructure that scales, pipelines that flow, systems that don’t break at 3AM.”

"Your Infrastructure is the backbone of your business. Don't leave it to chance—build it for scale, security, and performance." As a Senior Solutions Architect & Full-Stack Developer with over 12 years of battle-tested experience, I specialize in building, securing, and automating high-performance digital ecosystems. I bridge the gap between Software Engineering and Cloud Infrastructure, ensuring that your applications don't just run—they thrive. Whether you are migrating to the cloud, automating a DevOps pipeline, or requiring custom software integrated with enterprise systems like ERPNext, I provide the strategic oversight and technical execution needed to deliver ROI. 🚀 Core Expertise & How I Add Value: Cloud & Infrastructure Architecture: Designing resilient, auto-scaling environments on AWS, Azure, and Hybrid Cloud. Expert in high-availability clusters using VMware (vSphere/ESXi) and Proxmox VE. Full-Stack Development: Custom software and web development using modern frameworks. I specialize in building secure, scalable applications that are optimized for the underlying server environment. DevOps & Automation: Implementing CI/CD pipelines, Infrastructure as Code (IaC), and automated monitoring to reduce human error and operational costs. Cybersecurity & Hardening: Enterprise-grade security including WAF (Cloudflare) optimization, malware eradication, and advanced DNS security (Infoblox). I build "Zero Trust" environments. Enterprise Solutions (ERPNext / Frappe): Expert-level deployment, custom Python/JS scripting, and seamless integration with eCommerce and third-party APIs. High-Volume Email Infrastructure: Specialized in self-hosted email delivery solutions (MTA) designed for high deliverability and security. 🛠 Technical Arsenal: Virtualization: VMware vSphere, Proxmox, KVM. Development: Python, PHP, JavaScript, SQL, Custom Scripting. Web & CMS: WordPress & WooCommerce (Expert Tuning), ERPNext/Frappe. Cloud & Networking: AWS, Azure, DigitalOcean, Cisco, Aruba, Cloudflare (WAF/Workers). Security: Malware Cleanup, Server Hardening, VPNs, SSL/TLS, Disaster Recovery. Monitoring: Zabbix, Grafana, Prometheus. 💎 Why Clients Choose Me: The 360° Perspective: I understand the code and the container. This hybrid expertise allows me to troubleshoot issues that others miss. Enterprise Experience: 12+ years managing complex environments for hosting providers and large-scale businesses. Security-First Mindset: I don't just build for functionality; I build for defense. Business-Centric Communication: I translate complex technical jargon into clear business decisions. Stop managing technical debt and start scaling. Let’s connect to discuss your project requirements. "In the age of AI, infrastructure is no longer just about uptime—it's about Intelligence and Speed." As a Senior Solutions Architect & AI Developer with 12+ years of experience, I don’t just build systems; I build Intelligent Ecosystems. I bridge the gap between heavy-duty Cloud Infrastructure and cutting-edge Artificial Intelligence, enabling businesses to automate complex workflows and gain a massive competitive edge. I specialize in the "Modern Tech Trifecta": Robust Cloud Architecture, Scalable Full-Stack Development, and Custom AI Integration. Whether you need to deploy a private LLM, build a RAG-based AI agent, or secure a global enterprise network, I deliver production-ready solutions that scale. 🚀 The High-Value Pillars I Deliver: 1. AI Engineering & Intelligent Automation (New & Powerful) LLM Integration: Developing custom applications powered by OpenAI, Anthropic, or Open-Source models (Llama 3, Mistral). RAG Systems: Building "Chat with your Data" solutions using Vector Databases (Pinecone, Weaviate) for intelligent document retrieval. AI Agents: Designing autonomous agents for task automation using frameworks like LangChain or CrewAI. AIOps: Implementing AI to monitor, predict, and auto-heal cloud infrastructure. 2. Enterprise Cloud & DevOps (The Foundation) Architecture: Designing high-availability environments on AWS & Azure. Virtualization: Expert-level optimization of VMware (vSphere) and Proxmox for maximum hardware utilization. CI/CD: Automating the bridge between code and deployment for seamless, zero-downtime updates. 3. Full-Stack Web Engineering Custom Development: Architecting scalable backends and intuitive frontends that integrate seamlessly with AI APIs. ERP Systems: Deep customization of ERPNext & Frappe, including AI-driven insights and automated reporting. 4. Cybersecurity & Defense Hardening: Protecting AI models and sensitive data from leaks and attacks. Network Security: Advanced Cloudflare configurations (WAF, Workers, Zero Trust). 🛠 Technical Arsenal (Advanced) AI & Data: OpenAI API, LangChain, Vector DBs, Python (FastAPI/Flask), HuggingFace. Infrastructure: AWS (EC2, S3, Lambda), Azure, VMware, Proxmox, Docker, Kubernetes. 📩 Click "Invite" or "Hire" to start a conversation.

I am interested into Linux/Unix OS field & started learning & using it since 2005 I have experience in the following : Control Panels : WHM/cPanel, CWP, VestaCP, DirectAdmin, Webmin, Kloxo, & Plesk Operating Systems : AlmaLinux, CentOS, Red Hat, Ubuntu, Debian, SUSE, Knoppix STD, Kali, Oracle Solaris, & Microsoft Windows Server 2025 Web Servers : Apache, Nginx, LiteSpeed, Varnish, & IIS Databases : MySQL, MariaDB, MySQL Replication, MariaDB Galera Cluster, MongoDB, PostgreSQL, Redis, RabbitMQ, Kafka, & Microsoft SQL Server CMS Applications : vBulletin, Joomla, OpenCart, WordPress, Moodle, & Magento ERP : Odoo, & NextERP Scripting Tools : Bash, Awk/Sed, & Expect Programming Languages : Java (Basics), & Python Mail Servers : Exim, Postfix, Zimbra, & Dovecot Virtualization : KVM, OpenVZ, Xen, Proxmox, & LXC Containerization & Orchestration : Kubernetes, Docker, Containerd, OpenShift, & Portainer Monitoring Systems : Nagios, Zabbix, Cacti, Logwatch, Grafana, Prometheus, & Node Exporter Servers : Bind, SSH, SSL, Pure-FTPd, Vsftpd, Kickstart, NTP, & DHCP Authentication : LDAP, & Keycloak Firewall : Iptables, Firewalld, UFW, CSF, & OPNsense Clusters (Load Balancing & High Availability) : HAProxy, Pacemaker, Heartbeat, & Keepalived Sharing : NFS, GlusterFS, Samba, & iSCSI File Systems : XFS, ext3/ext4, RAID, LVM, & GFS Protocols : HTTP, TCP, UDP, IP, & ARP Routing : LAN, VLAN, & NAT Backup Tools : Rsync, Bacula, R1Soft, & Wasabi Security : OpenVPN, SELinux, Tcpdump, Netcat (nc), ModSecurity, & Site-to-Site VPN Anti-Virus / Anti-Malware : ClamAV, Maldet, ISPProtect, & ImunifyAV Version Control : Git, GitHub, & GitLab Infrastructure as Code (IaC) : Helm, Ansible, & Terraform Web Conferencing : BigBlueButton (BBB), Mconf, Apache OpenMeetings, Jitsi, & Matrix (Synapse) Cloud : DigitalOcean, AWS (Amazon Web Services), GCP (Google Cloud Platform), & Microsoft Azure CI/CD : Jenkins, GitLab Runner, & Argo CD Penetration Testing Tools : OpenVAS, Nikto, OWASP ZAP, & Metasploit Framework Blockchain : Hyperledger Fabric