DZ-Jay wrote:
> On Sep 04, 2010, at 11:40, Arno Garrels wrote:
>
>> Hello DZ-Jay,
>>
>> At least Firebird provides 5 priorities so why should we remove this
>> feature from ICS?
>
> It's not standard, most clients assume there's only "low," "normal,"
> and "urgent". In any case, setting TSmtpCli to use only three values
> (which is what it currently does, by the way)
It actually uses 5 values, look at the source:
if FHdrPriority <> smtpPriorityNone then begin
FHdrLines.Add('X-Priority: ' + IntToStr(Ord(FHdrPriority)));
if FHdrPriority < smtpPriorityNormal then begin
FHdrLines.Add('Priority: urgent');
FHdrLines.Add('X-MSMail-Priority: High');
end
else if FHdrPriority = smtpPriorityNormal then begin
FHdrLines.Add('Priority: Normal');
FHdrLines.Add('X-MSMail-Priority: Normal');
end
else begin
FHdrLines.Add('Priority: non-urgent');
FHdrLines.Add('X-MSMail-Priority: Low');
end;
end;
>
>> It's likely that X-MSMail-Priority can be removed, however my OE v6
>> still uses it, XP SP3.
>
> But that's OE v6. The question is, do we want ICS to impersonate OE
> v6, or to implement the protocol and let the client extend it as it
> wishes?
No, I do not think so.
>
> I don't have Windows at hand right now, could you test if OE v6
> handles "X-Priority" or "Priority" too?
It understands "X-Priority" not "Priority".
> Remember, one thing is the
> header it sends, another is the headers it understands from incoming
> mail. Typically, mail client developers understand that they receive
> messages from many different clients.
I understand that since along time.
> I think ICS should do the same, pick one from the most common ones
> and send that one only.
Most likely, but it has to be tested with all common e-mail readers
in use today. I currently haven't the time to do that.
> Client applications using TPop3Cli component
> should then take care to expect different formats and attempt to
> decode them. It should not hurt to include more than one, but it may
> be unnecessary, and it also doesn't follow the convention of other
> popular clients.
>
> The RFC standard suggests "Priority," but like I said, not many
> clients seem to be using it. They probably support it, though. The
> most common one seems to be "X-Priority".
That's my guess as well, but before we change the source it must be
fact.
--
Arno Garrels
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