This has nothing to do with T-Mobile or Boston except for two facts:
1) T-Mobile, like most companies, allow emails to be converted into SMS text messages. Send an email to
[email protected] and the phone number will receive a text message.
2) I bet every person, like myself, who has received these texts has a 617 area code number.
The "Apache" being seen, and the "www-data" being seen, indicate that someone has hacked the apache web server software. Many computers around the world run this software. These computers are being hijacked to send emails to random phone numbers @tmomail.net. Why 617? Why not? Randomly guessing phone numbers for any arbitrary area code requires 10 numbers to guess. Here they are sending to 617-###-####, leaving only 7 numbers to guess. There might be even less, as T-Mobile has specific sections of 617 it can dole out for phone numbers.
For those that glazed over, here's the summary:
These text messages are coming from hijacked computers around the world sending emails to random 617 phone numbers using T-Mobile's email to SMS system.