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Interweb Angola www.meu.interweb.ao › 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 Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseAutomation & n8n

A cron job that does not run or sends no output: a checklist

Most of the time the cron job does run, and fails for one of six reasons: an incomplete path, an unprotected % sign, the wrong PHP version, a script without…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseSecurity

DDoS attack or just a traffic spike: how to tell, and what to do

The short answer: a DDoS (distributed denial of service) attack is a flood of fake requests, from many addresses at once, meant to stop the site answering the real ones.…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseBackups & Migration

Copying mailboxes with imapsync: how it works and what to prepare

imapsync is a command-line tool that connects to two IMAP mailboxes, the source and the destination, and copies messages folder by folder, skipping those already there. That is why you…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseNode.js, Python & Docker

Django DisallowedHost, CSRF failed and missing static files: the fixes

You put Django online and three errors show up that nearly everyone meets: DisallowedHost, CSRF verification failed and the page with no styles (static files give a 404). They have…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseBackups & Migration

I deleted a file or folder by mistake: how to get it back from a backup

If you deleted a file or a folder, getting it back is almost always quick and does not need a restore of the whole account. First look in the File…

Interweb Angola www.meu.interweb.ao › Meu Interweb › 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…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseWordPress & CMS

The “HTTP error” when uploading images to WordPress

You drag a photo into the media library, the bar fills up, and at the end it says “HTTP error” and nothing else. The message tells you nothing because all…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseSpeed, Cache & CDN

Hotlink protection: stop others using your bandwidth

Hotlinking is when another website displays an image of yours straight from your server, instead of keeping a copy on theirs. To their visitor it looks like an ordinary image;…

Interweb Angola www.meu.interweb.ao › Meu Interweb › Knowledge Base Knowledge baseSecurity

File permissions explained: what 755, 644 and 777 mean

The short answer: on an ordinary hosting account, folders should be 755 and files 644. Files holding secrets, such as wp-config.php, can be tighter still (600). And never 777: it…