Email sending limits
Set outgoing email limits per server: an hourly cap per domain and per mailbox, a maximum number of recipients per message, and what happens when a cap is passed. Spam hold, remote SMTP blocking and DKIM signing sit on the same screen, so a compromised account is stopped before your IP is blacklisted.
- Topic
- D · Email
- Order
- 04 / 04
- Points
- 05
- 01Limits at two levelsHourly limits per domain and per mailbox; recipients per message is set separately.
- 02What happens on overrunQueue it, block it, or just notify: you choose what happens when a limit is passed.
- 03Switches in one placeSpam hold, remote SMTP blocking and DKIM signing live on the same screen.
- 04Per serverEach server has its own policy; one rule is not forced on the fleet.
What it does.
A compromised mailbox or a hacked contact form shows up first as a spike in outgoing mail. With an hourly limit in place, the spam run stops before your server’s IP lands on a blacklist and every other customer’s mail starts bouncing. The “just notify” option lets you see who would be caught before you tighten the rule. Limits are set per server, so a machine with business customers doesn’t have to share a threshold with a shared hosting box.
Hourly sending limits at two levels: per domain and per mailbox.
The maximum number of recipients per message is set separately.
You choose what happens when a limit is passed: queue the mail, block it or just notify.
Spam hold, remote SMTP blocking and DKIM signing live on the same screen.
The policy is per server; one rule isn’t forced on the whole fleet.
Why it is waiting, where it isn’t arriving, who is sending too much.
- D.01Details Email managementRun email for every cPanel, Plesk and DirectAdmin server from one screen. The mail queue shows why each message is stuck: greylisting, a DNS failure, a full mailbox or a spam hold. Delete a message, release a held one or flush the queue. Mailbox quotas, SPF, DKIM and DMARC checks and sending limits are one tab away.
- D.02Details Mailbox quota managementMailbox usage and quota sit side by side for every domain, sorted by how full they are. Filters find the mailboxes about to fill up, the heavy senders and the ones nobody has opened in a long time. Raise a quota before mail starts bouncing; the panel won’t let you set one below what is already used.
- D.03Details SPF, DKIM and DMARC checkerCheck SPF, DKIM and DMARC for every domain in one table, with a blacklist check for the server’s sending IP next to it. When a record is missing, the exact TXT line to add is waiting beside it, ready for the DNS zone. Add it and the row turns green on its own.
- D.04This page Email sending limitsSet outgoing email limits per server: an hourly cap per domain and per mailbox, a maximum number of recipients per message, and what happens when a cap is passed. Spam hold, remote SMTP blocking and DKIM signing sit on the same screen, so a compromised account is stopped before your IP is blacklisted.
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