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My isp in Mexico recebtly blocked port 25 to avoid email abuse. It opens it selectively after you make a formal request.<br />
<br />
One of my clients (with this isp) say it has opened port 25 but is unable to send email with outlook configured with his domain and port 25.<br />
<br />
How can I check whether my client has port 25 blocked blocked or not?
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My isp in Mexico recebtly blocked port 25 to avoid email abuse. It opens it selectively after you make a formal request.

One of my clients (with this isp) say it has opened port 25 but is unable to send email with outlook configured with his domain and port 25.

How can I check whether my client has port 25 blocked blocked or not?

Check if isp has port 25 opened or blocked

Networking is the process of connecting computing devices, peripherals and terminals together through a system that uses wiring, cabling or radio waves that enable their users to communicate, share information and interact over distances. Often associated are issues regarding operating systems, hardware and equipment, cloud and virtual networking, protocols, architecture, storage and management.

Networking

The term broadband commonly refers to high-speed Internet access that is always on and faster than the traditional dial-up access. Broadband includes several high-speed transmission technologies such as digital subscriber line (DSL), cable, fiber optics, wireless (for which there is a separate topic), satellite and broadband over powerlines (BPL).