Subject: Re: TTD?
To: =?UTF-8?Q?C=C3=A9sar_Catri=C3=A1n_Carre=C3=B1o?= <firstname.lastname@example.org>
From: Jeremy C. Reed <email@example.com>
Date: 11/11/2006 08:10:57
> like TTL, is there some kind of time to death for the sended mail for
> make it 'expire' and be deleted in the target mail server?
Not if it is already delivered to the user's mailbox on the the mail
But if still waiting to be delivered:
On sendmail, the configuration is confTO_QUEUERETURN (and a few similar
ones) which defaults to timeout the message after five days. See
For postfix, look at maximal_queue_lifetime configuration. See
postconf(5) manual page. The default is also five days.
From the client side, you may want to look at RFC 2852, "Deliver By SMTP
Service Extension". I have never knowingly used this. With sendmail, this
is configured with confDELIVER_BY_MIN. I don't know how complete it is and
probably is not very useful since most mail programs don't implement it.
Does anyone know about or use RFC 2852 to comment on this?