Kurt Hackenberg <k...@panix.com> ha escrit:
> Maybe the IMAP server is also questionable. How does it transmit the
> mbox From_ time to the client,
The envelope date is returned in a FETCH responce with the INTERNALDATE
data item (if such is requested).
> and why?
According to RFC 3501, section 7.4.2. "FETCH Response":
"INTERNALDATE
A string representing the internal date of the message."
The internal date is defined as:
"The internal date and time of the message on the server. This
is not the date and time in the [RFC-2822] header, but rather a
date and time which reflects when the message was received. In
the case of messages delivered via [SMTP], this SHOULD be the
date and time of final delivery of the message as defined by
[SMTP]."
(ibid. sect. 2.3.3. "Internal Date Message Attribute")
Notice the "not the date and time in the [RFC-2822] header" passage.
Date and time of the final delivery is stored in the message envelope,
which, for the mbox format, is the From_ line, therefore this value is
used.
> What does that server do when the mail is stored some
> other way, not in mbox format?
The value obtained from the first existing header from the following
list: "Received:", "X-Envelope-Date:", "Date:" (in that order).
Regards,
Sergey
