PIM Manager settings · Settings > Mail & alerting

Server / Port

Key	Mail.SmtpServer
Where	Settings > Mail & alerting > Mail sending > SMTP relay (also Get Started > Mail sender)
Type	Text
Default	Blank; port 587

What it does

The host name and port of the SMTP relay PIM Manager hands its mail to when the mail mode is SMTP relay, for example smtp.example.com on port 587.

When set

When set: every PIM mail -- including TAP codes for new admin accounts -- is handed to this server. The PIM Manager uses it at once; the engine and scheduled jobs from their next run. Port 465 (implicit TLS) is refused; use 587 with STARTTLS. A changed server makes the earlier test-mail proof stale.

When blank or default

When blank: SMTP relay mode cannot be saved, and an environment left in SMTP mode without a valid relay renders mail but sends nothing, reporting 'the SMTP relay is not configured correctly'.

Risk and how to reverse it

Your relay receives the content of every PIM mail, including one-time TAP codes, so it must be a server you trust and control. A wrong host or a firewall in between makes every send fail (shown in the Mail check and the test mail). Reversible: correct the server or switch back to Shared mailbox.

Requires

Admin role in PIM Manager. Mail mode SMTP relay. Outbound network access from the PIM Manager and the engine to that host and port. A From address is also required.