VERIFIED SOLUTION i

Resolve issue where Delivery Fails with 552 4.3.1 error code in eMessaging

Product Feature: Operational Settings
 

Issue

Delivery Failures are seen in eMessaging report with error status of 552 4.3.1.
In emsglog4j.log file, we are seeing plenty of the following entries:
2014-06-13 13:04:50,440 [EM] WARN [pool-1-thread-3] AbstractMessageSender.doSend(205) | 552 4.3.1 Message size exceeds fixed maximum message size

Cause

Issue was found to be the significantly large size of PDF email attachment, which exceeds the allowable limit set in the email gateway side.

Resolution

UPDATED: August 15, 2017
Solution was to increase the limit to the maximum anticipated size of PDF attached to email.

Few web references for increasing message size limit in different mail servers:
Exchange: http://exchangepedia.com/2007/09/exchange-server-2007-setting-message-size-limits.html
Postfix: http://www.electrictoolbox.com/postfix-email-size-limit/