How to block an email, if authenticated and sent from eMail id is different?
Question asked by sm2 - 5/3/2019 at 2:44 AM
I have domain in smartermail. Also have 2 emails and
When I configure account in microsoft outlook there is fields one just email address and second for authentication where I wrote email address and pass.
if first address and second address different but both is exist in, smartermail allow send mails. if in first first I wrote but in second, I'll able send send email as "one", but authenticate as "two".
There is problem everybody can change first field to someone else address and send emails as him.

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Kyle Kerst Replied
Employee Post Marked As Answer
You can navigate to Settings>Protocols>SMTP In and set the Require Auth Match: Email Address to force users to send only as the email address they authenticate with. 
Kyle Kerst
Technical Support Specialist
SmarterTools Inc.
(877) 357-6278

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