The user received a legitimate email with a return address using their text mail address. However they didn't send the email, they only received it. The sending address is their phone number @ mms.att.net
The user has an iPhone, an iPad and an iMac. The email was received on the iPhone and iPad, but not on the iMac.
Is there a way to see the header on an email received on an iPhone or iPad?
They have since called AT&T and made sure that they don't share their phone number account with anybody else.
ATT told them that they also share a satellite TV account with another person, but that this other person is the only control for the shared account.
The user changed their iCloud password, and confirmed that they have 2-factor authentication turned on.
My guess is that their phone number is embedded in the Mac Messages app on some computer somewhere, and that when a file was 'shared' the Messages app sent the file using a wrong phone number.
Naturally, they don't want people sending out email using their AT&T phone number
Any idea how this return address appeared?
Thanks.
Our community of experts have been thoroughly vetted for their expertise and industry experience.
The Distinguished Expert awards are presented to the top veteran and rookie experts to earn the most points in the top 50 topics.