Knowledge base

show vmta-settings

Effective settings of a sending address
Limits, outbound addresses and keys of one address

Prints the settings of one sending address: the greeting name, the address limits — max-smtp-out, rate and volume — outbound addresses with names and the declared signing keys with selector and file.

Here you see what the address got after merging: which outbound addresses and keys it received — for example, the shared outbound address if its own smtp-source-host is not written.

The main trap is expecting a list of all addresses. The command needs the name of one sending address; it cannot list the configured addresses.
What the Hub does. It calls it over SSH after applying the working configuration: it asks about the first sending address and checks that its IP is in the output. show vmtas does not fit here — on a fresh node with no traffic yet it stays silent.
Recommended values

When to call it:

Question This command or not
which addresses this address’s mail leaves from yes
which signing keys it declared yes
what applies to the pair with a receiver no — show settings
The output layout comes from the manual (§ 6.3.22); the shared outbound address when one’s own is missing is § 9.2. The observation about show vmtas on a fresh node is the Hub’s.
Example configuration
# settings of one sending address
pmta show vmta-settings vmta2
The manual’s example: the output splits into limits, a table of outbound addresses and a table of signing keys.
yellow — — directive names, blue — blocks. They are highlighted the same way in the text of the card.
Compatibility
PowerMTA 6.0
described in the manual of this version · platform: any
The vendor does not state the first version for every directive — there is no note here. The name also appears in the 5.0 edition of the manual.
How to check on the node
Check the outbound address:
pmta show vmta-settings vmta1 | grep -A3 'Source Host'
0.0.0.0 in the outbound address table means the address has no smtp-source-host of its own written.
In the Hub
Cost of a mistake
safe: a wrong value breaks nothing
Scenarios
Address warm-up