The LMTP server needs to check acceptable aliases

[Barry Warsaw]

The LMTP server currently does a sanity check on the To field of the incoming message, to ensure that it is addressed to a valid mailing list. This check ignores acceptable aliases, but it should honor them.

[Ian Eiloart (iane)]

Does "the To field of the incoming message" mean the RCPT TO argument of the LMTP session? Or the "To:" header of the message. I think it should mean the former, since the latter needn't be related at all, if the list permits BCC.

[Mark Sapiro (msapiro)]

BCC is the whole point of this bug. If a list requires 'explicit destination', the list address or an acceptable alias must be in the To: or Cc: headers of the message. The bug says acceptable aliases aren't checked and it means against the To: or Cc: headers.

Checking against the envelope recipient is irrelevant since if the list weren't the envelope recipient of the message, the list's chain wouldn't be seeing the message in the first place.

[Abhilash Raj (raj-abhilash1)]

This bug has been moved to the new gitlab repo here: https://gitlab.com/mailman/mailman/issues/69