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OpenVPN Server Configuration

How to Configure an OpenVPN

Description: This document describes the process of building an OpenVPN server to facilitate secure remote access to systems. The installation utilizes the base ArchLinux build we posted a few weeks ago. Ever have the need for a secure VPN into a private network that accommodates simultaneous connections? Need something free that can be setup on…

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Exchange On Premises and Office 365 Mail Flow Issues: SendConnector Could Not Be Found

penetration testing and vulnerability scanning

We recently had a client who had an issue after replacing their external certificate for their Exchange 2016 Hybrid. While they could send emails out, inbound emails were not reaching the individuals’ mailboxes in Office 365. Upon researching the issue, I noticed the following error in their mail queues: –> 454 4.7.5 The certificate specified…

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