[Linux-aus] SPF problems too

[ac]

On Fri, 15 Jan 2016 23:04:45 +1100
Steve Walsh <steve at nerdvana.org.au> wrote:
> condensed email answering several complaints and addressing some
> statements;
> 
okay, you have reduced your lifetime? (or increased your max_mess?) 
we are now down to 15 minutes! - and much closer to fifo - or it is
because everyone has gone to bed and the que is empty :)
you are most welcome to send me the stats from say 30 days so that
i can help you calculate the optimal _lock batch etc.? 

all your comments below noted and everyone here seems to know that 
you are doing a bang up job (i now know that as well)

thank you  :)


> On 01/15/2016 09:16 PM, ac wrote:
> > There seems to be a bug when the sendque is calculated
> 
> On 01/15/2016 09:37 PM, Noel Butler wrote:
> >
> > AC,
> >
> > There is nothing to worry about, this list server has always been
> > slow ass,taking 20-30 mins at times to send out, clearly an issue
> > with the server itself
> 
> Mailman's Qrunner doesn't process the queue FIFO. Instead, it opens
> up the directory and processes the entries sequentially. As qrunner 
> processes stuff, it deletes those files. So as new stuff comes in,
> they get stored as close to the start of the directory inode as
> possible, so when qrunner reaches a timeout, quits and restarts, if
> it hasn't processed everything in the directory, it starts over with
> newer stuff, leaving older stuff deep into the inode -- and it'll
> never GET to that stuff deep in the inode until the system quiets
> down and it's given a change to catch up.
> 
> As I've already indicated, we're working to fix this issue, but
> that's why AC is seeing mail come in out of order. It's the way the
> software unfortunately operates. It's a bit of a stretch to jump from
> the way the software operates to indicate that people aren't doing
> their job, or that the system is broken, and just being ignored, but,
> congratulations, you made it.
> 
> 
> On 01/15/2016 08:57 PM, Russell Coker wrote:
> > Thanks for the vote of confidence in my abilities.   I do make
> > mistakes on occasion, and in retrospect just adding a DMARC entry
> > and sending mail to lists was a mistake.  But a correctly behaving
> > list won't unsubscribe people because of a mistake made by one
> > member.
> 
> In all seriousness, how will the list server know what happened here? 
> You were experimenting with DMARC, there was a configuration error
> made ( a mail server error? from RC? uh oh Brent, better find some
> tightey whiteys), and a flurry of bounces came in. Mailman did what
> mailman is programmed to do.
> 
> 
> On 01/15/2016 09:06 PM, Russell Coker wrote:
> > Also do we even have a problem that greylisting will solve?  The
> > server does SPF checks so anyone who has a SPF record with -ALL
> > won't have their mail spoofed.  The server will only accept mail
> > from subscribers so we won't have a problem of spam from random
> > addresses being sent.
> 
> As you've probably seen in the mail headers, the host is called
> "mailhost".
> 
> "mailhost" does many things for LA, of which the mailman lists is
> only a small thing. It does all the SMTP and IMAP for the LCA and
> PyCon-AU teams, and, when we have the chance, it will do it all for
> Linux Australia. It also does mail filtering for the various RT
> instances that are in use by LA, LCA, PYCON and others. This means we
> get a lot of spam. A lot. Any of the list admins will tell you how
> much spam gets through the filters as it stands, even when we're
> quite aggressive.
> 
> Add to that the amount of time it takes a conference team to police
> spam into RT queueus (hint - we spent at least 2.5 hours a week
> clearing spam out of the queues for LCA2013 as the conference
> approached and the addresses got wider and wider exposure. that's 2.5
> hours a week we're not prepping for the conference. After a while,
> that adds up), and you'll probably start to understand why mailhost
> is configured the way it is.
> 
> I'm happy to discuss any aspect of this with people at LCA, which I'm 
> sure everyone here will be attending.
> 
> regards
> 
> 
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