Hostilla.pl IT glossary
What is Blacklist?
A blacklist contains IP addresses, domains or senders with poor reputation.
Definition
A blacklist contains IP addresses, domains or senders with poor reputation.
What does it mean in practice?
In Hostilla.pl services this term matters when configuring business e-mail, DNS records, deliverability, anti-spam filtering and user support.
A practical Hostilla.pl example
A practical e-mail check starts with the affected mailbox and domain, then compares DNS authentication, client settings and the exact SMTP or IMAP response. Blacklist gives the technician a precise name for the part of that path that must be verified.
What should you check?
- the full mailbox address and affected domain
- MX, SPF, DKIM and DMARC records where relevant
- the configured server names, ports and encryption mode
- the exact error, timestamp and message headers