MtaInboundThrottle

Defines an inbound rate limit rule for SMTP connections.

This object can be configured from the WebUI under Settings › MTA › Rates & Quotas › Inbound Rate Limits

Fields

`enable`

Type: Boolean · default: true

Whether to enable this throttle

`description`

Type: String · read-only

Short description for the throttle

`key`

Type: MtaInboundThrottleKey[]

Optional list of context variables that determine where this throttle should be applied

`match`

Type: Expression · default: {"else":"true"}

Enable the imposition of concurrency and rate limits only when a specific condition is met

Available variables: MtaRcptToVariable.

`rate`

Type: Rate · required

Number of incoming requests over a period of time that the rate limiter will allow

JMAP API

The MtaInboundThrottle object is available via the urn:stalwart:jmap capability.

`x:MtaInboundThrottle/get`

This is a standard Foo/get method as defined in RFC 8620, Section 5.1.

This method requires the sysMtaInboundThrottleGet permission.

curl -X POST https://mail.example.com/api \
  -H 'Authorization: Bearer $TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
      "methodCalls": [
        [
          "x:MtaInboundThrottle/get",
          {
            "ids": [
              "id1"
            ]
          },
          "c1"
        ]
      ],
      "using": [
        "urn:ietf:params:jmap:core",
        "urn:stalwart:jmap"
      ]
    }'

`x:MtaInboundThrottle/set`

This is a standard Foo/set method as defined in RFC 8620, Section 5.3.

Supports create, update, and destroy operations in a single call.

Create

This operation requires the sysMtaInboundThrottleCreate permission.

curl -X POST https://mail.example.com/api \
  -H 'Authorization: Bearer $TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
      "methodCalls": [
        [
          "x:MtaInboundThrottle/set",
          {
            "create": {
              "new1": {
                "key": {},
                "rate": {}
              }
            }
          },
          "c1"
        ]
      ],
      "using": [
        "urn:ietf:params:jmap:core",
        "urn:stalwart:jmap"
      ]
    }'

Update

This operation requires the sysMtaInboundThrottleUpdate permission.

curl -X POST https://mail.example.com/api \
  -H 'Authorization: Bearer $TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
      "methodCalls": [
        [
          "x:MtaInboundThrottle/set",
          {
            "update": {
              "id1": {
                "enable": true
              }
            }
          },
          "c1"
        ]
      ],
      "using": [
        "urn:ietf:params:jmap:core",
        "urn:stalwart:jmap"
      ]
    }'

Destroy

This operation requires the sysMtaInboundThrottleDestroy permission.

curl -X POST https://mail.example.com/api \
  -H 'Authorization: Bearer $TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
      "methodCalls": [
        [
          "x:MtaInboundThrottle/set",
          {
            "destroy": [
              "id1"
            ]
          },
          "c1"
        ]
      ],
      "using": [
        "urn:ietf:params:jmap:core",
        "urn:stalwart:jmap"
      ]
    }'

`x:MtaInboundThrottle/query`

This is a standard Foo/query method as defined in RFC 8620, Section 5.5.

This method requires the sysMtaInboundThrottleQuery permission.

curl -X POST https://mail.example.com/api \
  -H 'Authorization: Bearer $TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{
      "methodCalls": [
        [
          "x:MtaInboundThrottle/query",
          {
            "filter": {}
          },
          "c1"
        ]
      ],
      "using": [
        "urn:ietf:params:jmap:core",
        "urn:stalwart:jmap"
      ]
    }'

CLI

stalwart-cli wraps the same JMAP calls. See the CLI reference for installation, authentication, and general usage.

Fetch

stalwart-cli get MtaInboundThrottle id1

Create

stalwart-cli create MtaInboundThrottle \
  --field 'key={}' \
  --field 'rate={}'

Query

stalwart-cli query MtaInboundThrottle

Update

stalwart-cli update MtaInboundThrottle id1 --field enable=true

Delete

stalwart-cli delete MtaInboundThrottle --ids id1

Nested types

Expression

A conditional expression with match rules and a default value.

`match`

Type: ExpressionMatch[]

List of conditions and their corresponding results

`else`

Type: String · required

Else condition

ExpressionMatch

A single condition-result pair in an expression.

`if`

Type: String · required

If condition

`then`

Type: String · required

Then clause

Rate

Defines a rate limit as a count over a time period.

`count`

Type: UnsignedInt · default: 0 · min: 1 · max: 1000000

Count

`period`

Type: Duration · default: "0s" · min: 1

Period

Enums

MtaInboundThrottleKey

Value	Label
`listener`	Listener
`remoteIp`	Remote IP
`localIp`	Local IP
`authenticatedAs`	Authenticated As
`heloDomain`	EHLO Domain
`sender`	Sender
`senderDomain`	Sender Domain
`rcpt`	Recipient
`rcptDomain`	Recipient Domain

Expression references

The following expression contexts are used by fields on this page:

MtaRcptToVariable (Variables)