Email Source: MessageLabs (part of Broadcom)

Homepage: https://www.broadcom.com/products/cyber-security/web-and-email/messaging-security

This source is known to forward email

forwarding notes:

MessageLabs will not modify content if DKIM signatures are present.

DMARC Capabilities

Capable of generating DMARC compliant email for others

Yes

MessageLabs is capable of sending DMARC compliant email because they support custom SPF and DKIM configurations that achieve DMARC alignment. MessageLabs is a Corporate Email Security Platform and is often used by Network and Email Administrator teams.

Capable of signing email with DKIM for others

Yes

See the following vendor's support guidance: https://techdocs.broadcom.com/us/en/symantec-security-software/email-security/email-security-cloud/1-0/about-email-anti-malware/outbound-dkim-signing-settings.html

Capable of sending SPF compliant email for others

Yes

We recommend opening a support ticket to get help with custom SPF configurations as we couldn’t find any relevant ‘how to’ documentation on their site. The most recent support form we found was: https://ca-broadcom.wolkenservicedesk.com/web-form?_ga=2.248517314.479238053.1669912727-1708688186.1669912727