513667 - mail.server.default.dup_action recognizes duplicated messages only during the same TB session

Status: RESOLVED DUPLICATE of bug 449521

(MailNews Core :: Backend, defect)

Description

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User-Agent:       
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; de; rv:1.9.1.1) Gecko/20090715 Thunderbird/3.0b3

I have set "mail.server.default.dup_action" value to "2" for moving duplicated messages automatically to the trash folder.
As I realized, even then TB is only recognizing duplicates if they came in during the SAME session. If I get the same message 2 times during two different sessions (1 per session), TB doesn't recognize them as duplicates.

Example 1 (works correct within 1 TB session):
I open TB and get 2 times the same message. One of them gets deleted automatically.

Example 2 (works incorrect within 2 TB sessions):
I open TB and get 1 message (message A).
I exit TB.
I open TB again and get the same message again (message B). Now B is NOT recognized as duplicate of A.
Only if I get the same message a third time (message C), then obviously the last 2 duplicated messages (B and C) are identified as duplicates and thus one of them (e. g. B) will be deleted.
So in the end I will have left A and C, although they are duplicates.

So I guess, TB currently only compares messages received during one session.

Reproducible: Always

Comment 1

[Ludovic Hirlimann [:Usul]]

Xref bug https://bugzilla.mozilla.org/show_bug.cgi?id=449521#c1

Comment 2

[Ludovic Hirlimann [:Usul]]

Removing myslef on all the bugs I'm cced on. Please NI me if you need something on MailNews Core bugs from me.