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When sending group emails from Access ACS, why does the email From: display instead of the actual sender's email?

Products affected: Access ACS

Versions affected: Any


In short, this ensures that the members are receiving the group email.

We mask the From: field email address with in case the email is label as spam and the recipient does not receive in his or her inbox.

Our email servers look for the From: field email address of each email that passes through. If the domain in the email address being sent is not from or, the recipient will not receive that email as a normal email.

The recipients' email servers check the From: field domain name against our email servers here. If the From: address is not a domain name we recognize, the recipient's email server considers it spam. However, when you reply to the email, it sends to the original From: address. 

These rules are commonly used by industry standards.