Avamar: "Event email notification failed" Caused by Mail Server Issues

Summary: This article explains the conditions under which Avamar reports the "Event email notification failed" error due to mail server failures.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
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Symptoms

The event 22905 "Event email notification failed." appears intermittently in unacknowledged events:

Event Code: 22905
Category: SYSTEM
Severity: PROCESS
Summary: Event email notification failed

There is "Insufficient system resources." message in mcserver logs:

admin@av-srv:/>: grep "Insufficient system resources" /usr/local/avamar/var/mc/server_log/mcserver.log.*
...
mcserver.log.21:        javax.mail.MessagingException: 452 4.3.1 Insufficient system resources
mcserver.log.21:        javax.mail.MessagingException: 452 4.3.1 Insufficient system resources
... 
mcserver.log.21:FINE: query = insert into events (date_time, code, eid, source, data, ts, category, type, severity, swSource, summary, remedy, notes, description, audience, domain ) values ('2017-5-8 22:0:1.491000 +0:0:0',22905,13343,'<event-source NodeID="SERVERNAME" ProgramName="com.avamar.mc.event.EventProfileHandler$EmailDatabaseThread" ddr-id="" ddr-name="" gsan-version="7.3.1-125" hardware-id="UNKNOWN" source-hardware-id="UNKNOWN"/>','<data><entry key="error_message" type="text" value="Unable to send email notification: Sending failed;&amp;#xA;  nested exception is: &amp;#xA;&amp;#x9;javax.mail.MessagingException: 452 4.3.1 Insufficient system resources&amp;#xA;" version="1"/><entry key="toList" type="text" value="mail@mail.com" version="1"/></data>',1494280801491,'SYSTEM','ERROR','PROCESS','MCS:EventService','Event email notification failed.',NULL,NULL,NULL,NULL,'/')
mcserver.log.21:FINE: query6: insert into ev_unack (date_time, code, eid, source, data, ts, category, type, severity, swSource, summary, remedy, notes, description, audience, domain) values ('2017-5-8 22:0:1.491000 +0:0:0',22905,13343,'<event-source NodeID="SERVERNAME" ProgramName="com.avamar.mc.event.EventProfileHandler$EmailDatabaseThread" ddr-id="" ddr-name="" gsan-version="7.3.1-125" hardware-id="UNKNOWN" source-hardware-id="UNKNOWN"/>','<data><entry key="error_message" type="text" value="Unable to send email notification: Sending failed;&amp;#xA;  nested exception is: &amp;#xA;&amp;#x9;javax.mail.MessagingException: 452 4.3.1 Insufficient system resources&amp;#xA;" version="1"/><entry key="toList" type="text" value="mail@mail.com" version="1"/></data>',1494280801491,'SYSTEM','ERROR','PROCESS','MCS:EventService','Event email notification failed.',NULL,NULL,NULL,NULL,'/')
... 
mcserver.log.8: javax.mail.MessagingException: 452 4.3.1 Insufficient system resources
mcserver.log.8: javax.mail.MessagingException: 452 4.3.1 Insufficient system resources
... 
mcserver.log.8:FINE: query = insert into events (date_time, code, eid, source, data, ts, category, type, severity, swSource, summary, remedy, notes, description, audience, domain ) values ('2017-5-9 13:0:28.132000 +0:0:0',22905,13979,'<event-source NodeID="SERVERNAME" ProgramName="com.avamar.mc.event.EventProfileHandler$EmailDatabaseThread" ddr-id="" ddr-name="" gsan-version="7.3.1-125" hardware-id="UNKNOWN" source-hardware-id="UNKNOWN"/>','<data><entry key="error_message" type="text" value="Unable to send email notification: Sending failed;&amp;#xA;  nested exception is: &amp;#xA;&amp;#x9;javax.mail.MessagingException: 452 4.3.1 Insufficient system resources&amp;#xA;" version="1"/><entry key="toList" type="text" value="emailhome@avamar.com,mail@mail.com" version="1"/></data>',1494334828132,'SYSTEM','ERROR','PROCESS','MCS:EventService','Event email notification failed.',NULL,NULL,NULL,NULL,'/')
mcserver.log.8:FINE: query6: insert into ev_unack (date_time, code, eid, source, data, ts, category, type, severity, swSource, summary, remedy, notes, description, audience, domain) values ('2017-5-9 13:0:28.132000 +0:0:0',22905,13979,'<event-source NodeID="SERVERNAME" ProgramName="com.avamar.mc.event.EventProfileHandler$EmailDatabaseThread" ddr-id="" ddr-name="" gsan-version="7.3.1-125" hardware-id="UNKNOWN" source-hardware-id="UNKNOWN"/>','<data><entry key="error_message" type="text" value="Unable to send email notification: Sending failed;&amp;#xA;  nested exception is: &amp;#xA;&amp;#x9;javax.mail.MessagingException: 452 4.3.1 Insufficient system resources&amp;#xA;" version="1"/><entry key="toList" type="text" value="emailhome@avamar.com,mail@mail.com" version="1"/></data>',1494334828132,'SYSTEM','ERROR','PROCESS','MCS:EventService','Event email notification failed.',NULL,NULL,NULL,NULL,'/')
admin@av-srv:/>:

Cause

The error "452 4.3.1 Insufficient system resources" indicates an issue on the mail server.

According to Microsoft documentation, this error occurs when the mail server experiences resource depletion, such as insufficient memory, disk space, or processing capacity, preventing email processing.

Microsoft has documented this behavior in the following references:

Resolution

  1. Review the Exchange server for resource constraints such as memory, disk space, or transport service limitations.
  2. Resolve any transient resource depletion conditions identified.
  3. Verify that Avamar email notifications are sent successfully after mail server resources are restored.

Affected Products

Avamar
Article Properties
Article Number: 000034630
Article Type: Solution
Last Modified: 12 مارس 2026
Version:  5
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