Mail & Messaging Monitoring Plugins
Monitor email servers, message queues, PBX systems, and real-time communication platforms to ensure reliable message delivery and uptime.
Plugins for monitoring SMTP, IMAP, POP3 servers, mail queues, blacklist status, and messaging platforms like RabbitMQ, ActiveMQ, XMPP, and Rocket.Chat. Track PBX health for Starface and Swyx, verify email delivery loops, and alert on quota limits or service degradation.

ActiveMQ Health and Queue Check
Monitors Apache ActiveMQ broker health and queue sizes via the Jolokia REST API

Asterisk SIP Trunk Check
Icinga plugin to monitor Asterisk SIP trunk peer status via the AMI interface

Brevis.One SMS Gateway Check
Monitors Brevis.One SMS Gateway signal strength, queue status, and disk usage for Icinga
Email Loop Check
Monitors email delivery by sending and verifying test emails via SMTP and POP3/IMAP

Exchange Database Size Check
Icinga plugin to monitor Microsoft Exchange mailbox database size via PowerShell

Exchange Mailbox Space Check
Icinga plugin to monitor available free mailbox space in Microsoft Exchange databases

Icinga/Nagios Monitoring Plugins
Icinga monitoring plugins for mail queue, systemd services, and network traffic analysis on Linux
ILLiad Email Notifications Check
Monitors ILLiad server pending email notification queue count and age for Icinga
IMAP Connection Check
Monitors IMAP server connectivity and response times for Icinga monitoring systems
IMAP Mailbox Check
Monitors IMAP mailboxes for unprocessed emails via Basic Auth or OAuth2 authentication

IRC Daemon Check
Monitors IRC daemon connectivity and connected user count for Icinga monitoring systems

Jabber Connection Check
Monitors JABBER/XMPP server connectivity and response times for Icinga

Jitsi Videobridge Check
Monitors Jitsi Videobridge health, participants, conferences, and performance via REST API

Jitsi Videobridge Stats Check
Monitors Jitsi Videobridge performance metrics via the COLIBRI REST API for Icinga.

Jitsi Videobridge Status Check
Checks Jitsi Videobridge health state via the /about/health REST endpoint

Local Unread Email Check
Icinga plugin to monitor unread emails in local mail spool directories
Mail Loop Check
Icinga plugin to monitor end-to-end email delivery via SMTP sending and IMAP retrieval
Mail Queue Check
Icinga check plugin that monitors the number of messages in the mail queue

Mail Queue Check
Monitors mail queue length for sendmail, postfix, qmail, exim, and nullmailer MTAs
Mailbox Availability Check
Icinga plugin to check mailbox availability via POP3, POP3S, IMAP, or IMAPS protocols
Mailbox Health Check
Icinga plugin to monitor mailbox health by counting emails matching specific criteria

Mailcow API Health Check
Icinga plugin to monitor Mailcow mail server health via the Mailcow API

Mailcow Monitoring Check
Monitors Mailcow mail server health including queues, containers, disk usage, and mailbox quotas

Mailcow Rspamd Status Check
Icinga plugin to monitor Rspamd service status and mail filtering stats in Mailcow

Microsoft SNDS Blacklist Check
Checks if an IP address is blacklisted in Microsoft Smart Network Data Service (SNDS)

Mumble Availability Check
Icinga plugin to monitor Mumble server availability and performance via UDP ping
NNTP Connection Check
Monitors NNTP (Network News Transfer Protocol) server connectivity and response times for Icinga
NNTPS Connection Check
Monitors NNTPS (secure NNTP) connection availability and response time for Icinga
POP Connection Check
Monitors POP3 mail server connectivity, response time, and SSL certificate validity for Icinga

Postfix Greylist Policy Daemon Check
Monitors Postfix greylisting policy daemon health by testing TCP policy responses

Postfix Version Check
Icinga plugin to check installed Postfix version against EOL dates and available updates

Postfwd Rate Limit Check
Icinga plugin to check postfwd rate limits and detect senders exceeding sending thresholds

Proxmox Mail Gateway Check
Icinga plugin to monitor Proxmox Mail Gateway mail counts, spam, virus, and relay domain configuration

RabbitMQ Health Check
Icinga plugin for monitoring RabbitMQ 4.x cluster health, queues, exchanges, and AMQP connectivity
RBL Blacklist Check
Icinga plugin to check if an SMTP server is listed on DNS-based Real-time Blackhole Lists (RBL)
RBL Blacklist Check
Checks if an SMTP server IP is listed on DNS-based Real-time Blackhole Lists (RBL/DNSBL)

Rocket.Chat Statistics Check
Icinga plugin to monitor Rocket.Chat server statistics via the REST API

Rocket.Chat Version Check
Checks Rocket.Chat version against endoflife.date API and alerts on EOL or available updates
Secure IMAP Connection Check
Monitors Secure IMAP (SIMAP) server connectivity and SSL certificate validity for Icinga
SMS Modem Status Check
Monitors SMS modem status and signal strength via smstools3 status file for Icinga

SMSEagle GSM Signal Strength Check
Monitors GSM signal strength of SMSEagle SMS gateway devices via API v2
SMTP Connection Check
Monitors SMTP server connectivity and response times for Icinga monitoring systems
SMTP Send Check
Icinga plugin to monitor SMTP email sending capability and response time via msmtp
SMTP2Go Mail Usage Check
Monitors SMTP2Go email usage and quota utilization via API for Icinga
SPF Record Check
Icinga plugin to monitor and validate SPF (Sender Policy Framework) DNS records
SPOP Connection Check
Monitors SPOP (Secure Post Office Protocol) connection availability and response time for Icinga
SSMTP Connection Check
Monitors SSMTP server connectivity and response times for Icinga monitoring systems

Starface Account Statistics Check
Icinga plugin to monitor Starface PBX account statistics including active, ringing, and available accounts

Starface Channel Status Check
Monitors active DAHDI, SIP, and other channel usage on a Starface PBX system

Starface PBX Check
Icinga check plugin for monitoring Starface PBX appliances and comfortphoning equipment

Starface PBX Status Check
Icinga plugin to monitor Starface PBX health, RAID status, SIP status, and phone connectivity

Starface SIP Peer Statistics Check
Monitors SIP peer statistics (online/offline counts) of a Starface PBX via Icinga
Video Conference Device Health Check
Monitors hardware health and performance metrics of video conference devices for Icinga

XMPP Server Check
Icinga check plugin for monitoring XMPP server connectivity, STARTTLS, and certificate validity

Zimbra Backup Check
Icinga plugin to check Zimbra backup status and age on mail store servers
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