4.4.8. Mail whitelists and blacklists

Lists

Whitelist. List of domains, mailboxes, IP addresses and subnets from which emails will be delivered to your mailboxes with minimal spam checking.

Blacklist. List of domain zones, domains, mailboxes, IP addresses and subnets whose emails will never be delivered to your mailboxes and will be rejected by our mail server. The sender will receive an automatic reply with the error "550 5.7.1 Sender blacklisted". This is taken into account when redirect.

Whitelists and blacklists have two levels:

  • Account lists (white and black):
    • Affects all mail domains that belong to the current account.
    • These lists can only be modified by the account owner (users with delegated access are not able to modify them).
  • Mail domain lists (white, black):
    • Affects only the given mail domain.
    • The owner of the mail domain and all users with delegated access can modify these lists.
    • Have a higher priority than the mail domain owner's account lists.

Rules

Processing procedure

flowchart LR email@{ shape: stadium, label: "✉️ Message" } subgraph "🌐 Mail domain" domain_whitelist@{ shape: rounded, label: "⬜️ Whitelist" } domain_blacklist@{ shape: rounded, label: "⬛️ Blacklist" } end subgraph "👤 Account" account_whitelist@{ shape: rounded, label: "⬜️ Whitelist" } account_blacklist@{ shape: rounded, label: "⬛️ Blacklist" } end accept@{ shape: stadium, label: "✅ Accept" } reject@{ shape: stadium, label: "🚫 Reject" } email-->domain_whitelist domain_whitelist-->|Rule exists|accept domain_whitelist-->|No rule|domain_blacklist domain_blacklist-->|No rule|account_whitelist domain_blacklist-->|Rule exists|reject account_whitelist-->|Rule exists|accept account_whitelist-->|No rule|account_blacklist account_blacklist-->|No rule|accept account_blacklist-->|Rule exists|reject

  1. Mail domain whitelist.
  2. Mail domain blacklist.
  3. Account whitelist.
  4. Account blacklist.

If a rule in one of the lists is triggered, similar rules in the following lists are ignored. For example, if the domain example.com is simultaneously added to the mail domain whitelist and account blacklist, the rule from the account blacklist will not be triggered.

Quantity

Maximum number of rules that can be added to the lists (total for white and black lists):

  • Account lists — 100.
  • Mail domain lists:
    • Corporate mail — 200.
    • Hosting account mail — 20.

Add

Important points:

  • One rule cannot exist in both the white list and the black list at the same time. Adding an identical rule to the second list will remove it from the first list.
  • Whitelist:
    • Add as specific rules as possible and only if emails from the right senders go into spam or are rejected by the mail server.
    • Do not add domains of well-known mail services (e.g. gmail.com) — emails from them are delivered without any problems, but this way you will protect yourself from spam using domains of these mail services as a sender.
    • Domain zones cannot be added.
  • Blacklist:
    • Be very careful when adding rules, especially IP addresses and subnets — the desired emails may come from the same addresses.
    • You can add domain zones in the format *.zone (the asterisk is mandatory).
  1. Open the desired list (see Lists).
  2. At the top of the page, click "Add rule".
  3. Specify domains, mailboxes, IP addresses, subnets (each entry on a new line) and click "Add".

Delete

Attention!

  • Single rules are deleted without confirmation.
  • Deleted rules cannot be restored.

Single rule — open the desired list and in the rule row, click ❌.

All rules from the list — open the list, at the top of the page click "Clear list" and confirm the operation with the button in the window.

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