Re: [Sender Address Forgery]Re: [Sender Address Forgery]Re:[Sender Address Forgery]Re: [HACKERS] path toward faster partition pruning

Hello,

At Thu, 18 Jan 2018 11:41:00 -0800, Andres Freund <andres@anarazel.de> wrote in
<20180118194100.dy3kxdtktsbvm4eq@alap3.anarazel.de>
> Hi Amit,
> 
> It seems your mail system continually adds "[Sender Address Forgery]"
> prefixes to messages. E.g. this mail now has
> Subject: Re: [Sender Address Forgery]Re: [Sender Address Forgery]Re: [Sender Address Forgery]Re: [HACKERS] path
towardfaster partition pruning
 
> as its subject, whereas the mail you're replying to only had
> Subject: Re: [Sender Address Forgery]Re: [Sender Address Forgery]Re: [HACKERS] path toward faster partition pruning
> two of them.
> 
> I think the two previous occurances of this also are from you.
> 
> This is somewhat annoying, could you try to figure out a) what the
> problem is b) how to prevent the subject being edited like that?

Our mail server is failing to fetch SPF record for David's mails
that received directly (not via -hakders ML) and the server adds
the subject header.  It is failing to fetch SPF record for
2ndquadrant.com. The reason might be that the envelope-from of
his mails is not consistent with his server's IP address.

Anyway, mails via -hackers ML doesn't suffer so, what Amit (and
I) side can do by myself is one of the following.

- Being careful to reply to the mails comming via the ML.
- Remove the added header by hand..


And I'd like to ask David to check out his mail environment so
that SPF record is available for his message.

regards,

-- 
Kyotaro Horiguchi
NTT Open Source Software Center