Per-Domain SMTP & the Account Default

Each domain has its own outgoing sending route. Choose managed TrekMail SMTP or a saved provider profile. An account default is useful when new domains should follow the same route.

Where to find it

Open Domains, select a domain, then open SMTP. The account-wide default controls are on the same tab, below the route you select.

Choose a route for the domain

Choose one of these on the domain's SMTP tab:

• TrekMail SMTP: the managed route, available on paid mail plans. The tab shows the current host, ports, and encryption for the account.
• Saved SMTP profile: a provider connection already saved to the account. You can reuse one profile on more than one domain.
• New custom SMTP profile: enter the provider hostname, port, encryption, username, and password; test the connection; then save it for the domain.

The account-wide default

The default is not another delivery service. It is a pair of controls underneath the route you choose:

• Make this the account default: new domains follow this route. A saved profile becomes the default profile; managed TrekMail SMTP becomes the managed default.
• Apply to all domains: after confirmation, switch every domain in the account to this route. Review the affected domains first, especially if different clients use different providers.

If a domain has no usable route, it cannot send. A paid account can choose managed TrekMail SMTP. A Nano domain needs a working custom profile.

Each domain keeps its own route

Setting a default affects domains that follow the account default. It does not replace a route you explicitly selected for another domain. Use Apply to all domains only when you deliberately want to replace existing routes.

Good to know

• Deleting a shared profile removes it from affected domains and sending addresses. Paid-plan domains can fall back to managed SMTP; a Nano domain can become unconfigured until another profile is assigned.
• A custom profile is usually authorized for a specific provider and sending domain. Before using it for another domain, confirm that provider is allowed to send for that domain.
• A custom profile has its provider's own limits. It does not bypass TrekMail domain, account, safety, or rate checks.