https://onwar.se/ 2026-09-30T09:04:56+00:00 https://onwar.se/ https://onwar.se/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2026-09-30T07:29:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://onwar.se/doku.php?id=changing_the_default_ssh_port:a_case_study&rev=1790753359&do=diff (Image: https://www.istockphoto.com/photos/class=)The default port for SMTP is 25, but other ports such as 587 and 465 are also commonly used, especially for secure connections. Testing the SMTP port is essential for a variety of reasons. By testing the SMTP port, you can identify whether the issue lies with the server, the network, or the email client configuration. If you encounter issues with sending or receiving emails, the first step is to determine whether your SMTP server is accessible an…