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

Webmin and Virtualmin on a VPS: a server admin tool and a hosting panel, explained

This article is for people with a VPS or a dedicated server with root access. On shared plans the panel is cPanel, and you neither choose nor install another one.…

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

Error 421 and 451: temporary failures, and why the message is delayed and not lost

An error that starts with a 4 (421, 450, 451, 452) is a “not now, try later” reply. It is not a refusal. The server that sent the message keeps…

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

Lowering the TTL before a migration: the timeline that keeps the switch short

The short answer: the TTL tells every cache how long it may keep an answer, counted from the moment it asked. So at the moment you change a record, the…

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

The security certificate warning in Outlook: what it means and how to stop it

The short answer: the warning “The server you are connected to is using a security certificate that cannot be verified” appears when the server name you typed in Outlook does…

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

SQL injection and XSS in plain words: what to ask your developer

The short answer: SQL injection and XSS are two of the oldest attacks on websites, and they still work because they come from the same oversight: trusting what the visitor…

MozOut - Kenya www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseSEO & Marketing

Query strings explained: what comes after the question mark, and what it changes

The short answer: everything after the ? in an address is the query string: name=value pairs separated by &, up to the end of the address or a “#”. The…

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

Repairing the Outlook data file: damaged PST or OST, SCANPST and a new OST

The short answer: Outlook keeps mail in a data file on the computer: an OST (a copy of what is on the server, for recent IMAP and Exchange accounts) or…

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

Classic Outlook or the new Outlook: what changes, and which one to use

The short answer: there are two Outlooks for Windows today. The classic one is the long-standing program that comes with Office, keeps mail in a file on the computer and…

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

Moving from the classic Outlook to the new one: what comes with you and what does not

The short answer: when moving from classic Outlook to the new one, mail from IMAP accounts comes by itself, because it is on the server. What may stay behind is…

MozOut - Kenya www.my.mozout.com › My MozOut › Knowledge Base Knowledge baseAI & Agents

ChatGPT, Claude or Gemini: which AI tool suits which task

ChatGPT, Claude, Gemini, Copilot, Grok. New versions turn up month after month and the question that reaches us is always the same: which one is best? The honest answer is…