Mike Pagé mikepage

RabbitMQ Header Overflow: "invalid AMQP data" Error

Problem Summary

Symfony Messenger consumers crash with invalid AMQP data or frame size errors when messages have been retried excessively, causing message headers to grow beyond AMQP frame size limits.

The primary culprit is Symfony's DelayStamp headers when using variable delays (exponential backoff), not the RedeliveryStamp (which is pruned) or RabbitMQ's x-death header.

Error Manifestation

Directadmin CSF uninstall

Custombuild

Set csf to no

da build set csf no

Directadmin, add default ssh keys for new users

Create the custom scripts directory (if it doesn’t exist)

mkdir -p /usr/local/directadmin/scripts/custom

Create the user_create_post.sh script or update existing script when immunify360 is active

Install the required tools:

dnf install cloud-utils-growpart

Use growpart to extend the partition to the end of the disk:

growpart /dev/vda 4

	# /usr/local/directadmin/custombuild/custom/dovecot/2.4/conf/mail_max_userip_connections.conf

	mail_max_userip_connections = 100
	remote 127.0.0.1 {
	mail_max_userip_connections = 150
	}

	# Admin contact
	imunify360-agent config update '{"ADMIN_CONTACTS": {"emails": ["email@example.com"]}}'

	# General config with CSF not installed (CSF integration false)
	imunify360-agent config update '{"AUTO_WHITELIST": {"timeout": 1440}}'
	imunify360-agent config update '{"CONTROL_PANEL": {"compromised_user_admin_notification": true, "generic_user_notifications": true}}'
	imunify360-agent config update '{"CSF_INTEGRATION": {"catch_lfd_events": false}}'

	# Malware scanning
	imunify360-agent config update '{"MALWARE_SCANNING": {"detect_admin_tools": true, "notify_on_detect": true}}'

	#!/bin/bash

	for file in /etc/virtual/limit_*; do
	usern=$(echo "$file"\|cut -d '_' -f2)

	# Skip limit_unknown
	if [ "$usern" = "unknown" ]; then
	continue
	fi

	# Replace EMAIL
	doveadm force-resync -u EMAIL -f "*"
	systemctl restart dovecot

	# Delta Fiber
	62.45.70.100
	62.45.71.100