ExpiryGmane respects the X-No-Archive, Archive and X-Archive headers. These headers allow users to say how long Gmane should store messages.
X-ArchiveThe Gmane X-Archive header controls whether email addresses should be encrypted, as well as the message expiry. The "expiry" token gives the length of the expiry period in days.
means that the message should be expired after seven days. Using a value of zero days means that Gmane won't store the message at all.
ArchiveThe USEFOR Archive header has only one useful value: "no". Gmane interprets this to mean that the message should expire after 14 days.
X-No-ArchiveThe obsolescent X-No-Archive header has only one useful value: "yes". Gmane interprets this to mean that the message should expire after 14 days.
This feature can be disabled on a list-by-list basis. If the list admin requests it, the X-No-Archive, Archive and X-Archive headers will be ignored.
ImplementationGmane implements expiry with cancel messages. Once a day, the expiry log is processed, and any articles that are found to have expired will be canceled. On the main Gmane site, cancel messages result in the messages disappearing from both the news and web interfaces, but the messages won't really be deleted. They will, however, be totally and utterly gone from public view.
Removing messages that you've already postedIf you wish to suppress messages that you've already posted, we need the following: