We have received complaints that our mailing list is suffering from unwanted spams from external sources.

Spammers regularly attempt to get the lists of subscribers to mailing lists [some mail servers will give those upon request], knowing that the email addresses are unmunged and that only a few of the addresses are invalid.

When mail servers are configured to refuse such requests, another trick might be used – spammers might send an email to the mailing list with the headers Return-Receipt-To: or X-Confirm-Reading-To: . Those headers would cause some mail transfer agents and reading programs to send email back to the saying that the email was delivered to / read at a given email address, divulging it to spammers.

Our IT team is working quickly to get things back to normal.

The Protutors Team sincerely apologize for any inconvenience caused.