22 Sep
2018
22 Sep
'18
3:32 a.m.
On 2018-09-21 08:57, Ralph Seichter wrote:
On 21.09.18 16:40, Dave Warren wrote:
It would be fantastic if the list operators were to track this down and kill it off.
Imagine an address A subscribed to this mailing list in a read-only fashion (a.k.a. "lurker"). A uses list posts as triggers to send spam from address B, which does not even need to be subscribed. How would the list admins ever be able to connect A to B?
Send a message through the list's outbound SMTP server that looks like a list message, but comes from bob-$identifier@some-domain.example where $identifier is unique to each post.
Then wait a bit and see what address receives spam, determine which address received the message and deal with it.