This article applies to:

• Trustwave MailMarshal (SEG)

Symptoms:

• Bare carriage returns and bare linefeeds are technically not allowed in e-mail messages.
• Some e-mail systems create messages containing bare carriage returns or bare linefeeds.

Resolution:

1. Edit advanced properties of the Receiver
   • MailMarshal (SEG) 10 Management Interface: System Configuration > Array Properties > Receiver > Advanced
   • SEG 7.X and 8.X: MailMarshal Configurator: Trustwave SEG Properties > Receiver > Advanced
   • For earlier versions, see the documentation to find the location
2. In the Bare Carriage Returns drop-down box, choose the desired behavior:
   • Block: Messages containing bare CRs will be dead-lettered
   • Fix: Bare CRs will be converted to CRLF
   • Ignore: Bare CRs will be passed though unchanged (this is the default behavior)
3. In the Bare Linefeeds drop-down box, choose the desired behavior:
   • Block: Messages containing bare LFs will be deadlettered
   • Fix: Bare LFs will be converted to CRLF
   • Ignore: Bare LFs will be passed though unchanged (this is the default behavior)

Notes:

A bare linefeed is an 'LF' (linefeed) without a preceding 'CR' (carriage return).

This article was previously published as:

NETIQKB29671

Marshal KB488