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Interweb Mozambique www.meu.interweb.co.mz › Meu Interweb › Knowledge Base Knowledge baseE-mail

How an e-mail travels: SMTP to the MX server, then IMAP or POP to the reader

The short answer: an e-mail travels in three legs, and each leg uses a different protocol. First, your program hands the message to your server over SMTP, with a username…

Interweb Mozambique www.meu.interweb.co.mz › Meu Interweb › Knowledge Base Knowledge baseDomains & DNS

Checking DNS from the command line: dig and nslookup, and how to read the answer

The short answer: dig and nslookup ask the DNS directly what it answers for a name. They are the quickest way to know whether a change has arrived, where your…

Interweb Mozambique www.meu.interweb.co.mz › Meu Interweb › Knowledge Base Knowledge baseWordPress & CMS

Exporting and importing content between two WordPress sites

The short answer: WordPress has its own tool to carry the content (pages, posts, comments, menus, images) from one site to another, under Tools > Export and Tools > Import.…

Interweb Mozambique www.meu.interweb.co.mz › Meu Interweb › Knowledge Base Knowledge basecPanel & WHM

Error 404 on a page that should exist: the causes, in order

The short answer: error 404 means “the server is working but cannot find what was asked for”. For a page you know exists, the causes are almost always a file…

Interweb Mozambique www.meu.interweb.co.mz › Meu Interweb › Knowledge Base Knowledge baseDomains & DNS

TXT records in practice: long values, quotes and several records on one name

The short answer: a TXT record holds text, and it is where SPF, DKIM, DMARC and the domain verifications for Google, Microsoft and many other services live. It looks like…

Interweb Mozambique www.meu.interweb.co.mz › Meu Interweb › Knowledge Base Knowledge baseE-mail

Autodiscover and autoconfig: how Outlook and your phone find the mailbox settings

The short answer: when you type just the e-mail address and password, Outlook, Thunderbird and phones look up the server settings by themselves. They do it by consulting some special…

Interweb Mozambique www.meu.interweb.co.mz › Meu Interweb › Knowledge Base Knowledge baseE-mail

Read receipts and tracking pixels in e-mail: what they tell you and what they do not

The short answer: knowing whether someone read your e-mail seems useful, but it is unreliable. A read receipt depends on the recipient agreeing; the “tracking pixel” (a tiny image) is…

Interweb Mozambique www.meu.interweb.co.mz › Meu Interweb › Knowledge Base Knowledge baseOnline Stores

WooCommerce e-mails not arriving: what to check

The order comes in, the money is paid, and the customer swears they got nothing. Or it is you who never receives the “new order” notice. On WooCommerce, an e-mail…

Interweb Mozambique www.meu.interweb.co.mz › Meu Interweb › Knowledge Base Knowledge baseE-mail

Email Routing in cPanel: local, remote or automatic, and the mail that vanishes

The short answer: cPanel decides, for each domain, where the mailboxes are: here (local) or on another service (remote). If your domain’s e-mail is on another service (Google Workspace, Microsoft…

Interweb Mozambique www.meu.interweb.co.mz › Meu Interweb › Knowledge Base Knowledge baseNode.js, Python & Docker

Nginx as a reverse proxy in front of a container

A reverse proxy is nginx receiving requests on ports 80 and 443, under your domain, and handing them to the application sitting on another port inside the server. It is…