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Testing IMAP, POP3 and SMTP by hand with openssl s_client: a guide for technical users

This article is for technical users with a command line (Linux, macOS, or Windows with OpenSSL). The short answer: openssl s_client opens an encrypted connection to the server and lets…

MozOut - United States www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseWhatsApp & APIs

Typebot: building a WhatsApp conversation flow on your own server

Typebot is an open-source program for designing conversations in blocks, connecting boxes on a screen (a question, a choice, a decision) without writing code. The same flow can run in…

MozOut - United States www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseComparisons and alternatives

Moving a site between Linux and Windows servers: the differences that break it

A site made only of HTML, CSS and JavaScript moves from Linux to Windows (or back) with no trouble. A site with PHP or a database usually works, but breaks…

MozOut - United States www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseSecurity

A security.txt file: telling researchers how to report a problem

The short answer: security.txt is a small text file, in an agreed place on your site, that tells whoever discovers a security flaw who to report it to. It is…

MozOut - United States www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseComparisons and alternatives

www or no www: which address to choose for your site

Short answer: either will do, and the choice is mostly a matter of taste. What is not a matter of taste is picking just one, making the other redirect to…

MozOut - United States www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseSecurity

Files that must never be public: .git folders, .env, backups and database dumps

The short answer: everything in the site folder can be requested by anyone who guesses the file name. Git folders, files with passwords (.env), copies like wp-config.php.bak and database dumps…

MozOut - United States www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseVPS & Servers

How to host several websites on one VPS

A VPS has one IP address and can serve as many sites as its memory and processor can carry. The web server picks which one to show from the name…

MozOut - United States www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseE-mail

Track Delivery: finding out what happened to a message you sent

“I sent it, and they say they did not receive it.” Instead of guessing, cPanel has a screen that shows the trail of each message that went through the server:…

MozOut - United States www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseE-mail

Other e-mail apps on your phone: Gmail, Samsung Email and Outlook, with the same settings

The short answer: your domain’s e-mail works in any app that accepts an IMAP account. The settings are always the same; what changes is where each app asks for them.…

MozOut - United States www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseDomains & DNS

Reading a whole DNS zone line by line: names, trailing dots, TTL and the @ sign

The short answer: a DNS zone is a plain-text list of records, one per line, in a standard format (the “zone file” from RFC 1035, the one BIND uses). Many…