This article applies to:

• Trustwave MailMarshal (SEG)

Symptoms:

Event ID: 3501
Type: Error
Source: MMReceiver
Description: Buffer Limit exceeded

A message has been received containing one or more properties that exceed pre-defined limits.

Causes:

This error is typically generated when a remote system attempts to send a message including a single line that contains more than 1000 characters. The Internet RFC 822/2822 (the standard for SMTP email), specifies that a message MUST NOT contain more than 1000 characters per line without folding, including the carriage-return/line-feed pair at the end of the line.

• Later versions of SEG will attempt to "fold" longer lines, but a hard limit of 2048 characters generally applies.

More Info:

For more information on buffer limits, see: RFC 2822 section 2.1.1