VM Resource Configuration

Determine your size profile with the Sizing Guide, find it in the table below, and then configure each parameter accordingly. After configuration, restart the corresponding component as described in Operation Guide.

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MTA

• Value: CORE_JVM_ARGS Location: /etc/xorlab/activeguard/.env

  Minimal	Small	Medium	Large	X-Large
  -Xmx6g	-Xmx6g	-Xmx12g	-Xmx24g	-Xmx24g

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XCC

• Value: XCC_START_PARAMS Location: /etc/xorlab/xcc/backend/backend.env

  Minimal	Small	Medium	Large	X-Large
  32	32	64	128	128

• Value: XCC_JVM_ARGS Location: /etc/xorlab/xcc/backend/backend.env

  Minimal	Small	Medium	Large	X-Large
  -Xmx6g	-Xmx6g	-Xmx8g	-Xmx10g	-Xmx10g

• Value: ES_JAVA_OPTS Location: /etc/xorlab/elastic/docker-compose.yml
  Values in the table are not ranges. Each is a single value in the form of -Xms6g -Xmx6g which sets both the initial and maximum heap size allocated to the Java Virtual Machine

  Minimal	Small	Medium	Large	X-Large
  -Xms6g -Xmx6g	-Xms6g -Xmx6g	-Xms12g -Xmx12g	-Xms16g -Xmx16g	-Xms16g -Xmx16g

• Value: REDIS_MAXMEMORY Location: /etc/xorlab/xcc/.env

  Minimal	Small	Medium	Large	X-Large
  1GB	1GB	4GB	10GB	10GB

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Expert Editor

• Value: reputationComplexityFactor Location in Expert Editor: /xcc/backend/xcc.yml This factor roughly controls how fast local reputation is learned. Use the value 25 for 1-25 mailboxes, 50 for 25-50 mailboxes, and keep the default otherwise.
  • Minimal value: 0
  • Maximal value: 100
  • Default value: 100

After changing reputationComplexityFactor, click Publish and restart XCC. This general xcc/backend/xcc.yml setting requires an XCC restart; see How to Activate the Configuration.

• Value: smtpd_client_connection_count_limit Location in Expert Editor: activeguard/mta/startup_cfg/postfix_custom/main.cf.vmx.N Controls how many simultaneous connections any client is allowed to make to the Postfix service; useful only when handling very high volumes of mail traffic (X-Large sizing and beyond). After changing smtpd_client_connection_count_limit, click Publish. The new Postfix setting becomes active within about one minute. See the official Postfix parameter documentation or Postfix performance tuning guide.