How a domain sends. Sending limits. Relays and routes. Publish mail DNS.
How this domain sends
Mail domain → Outbound routing. Where mail from this domain goes, the certificate it presents, and how much it may send.
Outbound mail. Where it goes, certificate, limits, relays, routes.
Box / button
What it does
Where mail goes
Directly to each recipient's mail server, or through a relay once a relay and a route are added.
Mail certificate
What mail apps and other servers see for this domain's mail host. Pill: valid, name, expiry. Renews with the website's certificate.
Sending limits
Box / button
What it does
Messages per hour
How many this domain may send in an hour. Under it: your plan allows ….
Messages per day
Same, per day.
0
Follows your plan's limit. A lower number holds this domain to less. Over it: held back, not lost.
Save
Appears once you change a number.
Relays
Another mail server you may send through, e.g. SendGrid or your own. Adding one changes nothing until a route uses it.
Add a relay. Name, server, sign-in, encryption.
Box / button
What it does
Add relay
Opens the form.
Name
Yours, e.g. SendGrid.
Server
Host and port, e.g. [smtp.sendgrid.net]:587. Brackets skip the MX lookup.
Sign in to it
On by default.
Username · Password
The relay's login. Editing: blank keeps the stored password.
Encryption
may (encrypt if offered) · encrypt (refuse unencrypted, default) · verify (also check the certificate).
Create · Save
Adds or updates.
Relay · Sends via · Signs in · Encryption
The list. provided = from the platform; you cannot edit it.
edit · Delete
Delete also removes routes that use it.
Routes
Box / button
What it does
Add route
Needs a relay first.
Applies to
Everything from your domain or One mailbox only. A mailbox route wins.
Mailbox
For a mailbox route: the part before the @, e.g. sales.
Through
Which relay.
Delete
Mail goes direct again from the next message.
Actions
Box / button
What it does
Publish this domain's mail DNS · Publish
Writes MX, SPF, DMARC, the mail host and autoconfig records into the zone here. Corrects wrong ones. Zone hosted elsewhere: the records are listed for you instead.
Use the website's certificate for mail · Wire it up
Mail TLS uses the website's certificate, so servers see a name they can verify. Needs mail. your domain or the apex served here.
