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I am running a Postfix server and I would like to know the meaning of suffixes that mail filenames have. For instance:

1338839258.Vfe02I2a6f0M572204.example.com:2,S
1338840057.Vfe02I2a6f1M483134.example.com:2,S
...

And also, what's the criteria to assign them? I've been searching information on this topic, but I have only found references to procmail mechanisms.

Thanks!

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1 Answer 1

up vote 3 down vote accepted

The 2 indicates that each character following the comma is a flag.

The S flag means "seen" (i.e. the message has been read).

http://cr.yp.to/proto/maildir.html

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1  
To clarify: this is NOT a procmail (or even Postfix) specific thing: It is part of the maildir inbox format, and is supported by a number of MTAs and MDAs (and even used by a few MUAs apparently) –  voretaq7 Oct 5 '12 at 21:17
    
I know that (hence the link to the Maildir spec). The OP didn't. –  Kevin DeGraaf Oct 5 '12 at 21:21
    
I know you know that Kevin (because you linked to the spec), I also know the OP didn't (because they asked the question) and don't want them wandering around with a mistaken impression should the link to the spec not be a good enough hint :) –  voretaq7 Oct 5 '12 at 21:25
1  
Fair enough. In the future, I'll explain to OPs: "This isn't a foo issue, it's a bar issue, and here's the answer and the bar specification." :-) –  Kevin DeGraaf Oct 5 '12 at 21:31
1  
Thanks for this clarifying discussion ^_^ IMHO the first comment should've been made to my post, not the answer. –  elitalon Oct 6 '12 at 16:01

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