SMTP Configuration - Add "Send As" Field or modify use of "Sender Name" Field
Phish Threat SMTP configuration allows the admin to specify a Sender Name which populates part of the the FROM header field on the message. This is not the same as specifying "Send As" which would allow for the proper use of SMTP aliases.
Currently in the case the primary SMTP address used to authenticate to the mail server only authenticated primary SMTP address is used for the sender.
Sender Name: Helpdesk
Meanwhile the mail client displays identity of the authenticating account and not the configured alias.
Thanks for the suggestion. We are considering this for a future update of Phish Threat.