#arpnetworks 2012-07-20,Fri

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WhoWhatWhen
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andolIs this just me being picky, or might arpnetworks.com benefit from an updated spf record? [10:21]
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[10:33]
jdoewhat's your complaint about the spf record? [10:37]
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andoljdoe: It only refers to the mx record, which doesn't seem to be the smtp server being used to send mails.
Doesn't affect auto-generated mails, as those seem to use @ice.arpnetworks.com in the SMTP-envelope, which doesn't have any spf record. Not that it is much of an issue for @arpnetworks.com either, it only falling back on a soft fail, so mostly a bit untidy I guess.
andol is in the habit of spending a bit to much time reading mail headers
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toddftoddf wonders if andol attempts to critique spam's headers too... [11:40]
andoltoddf: Haven't gotten that deep into the rabbit hole yet. [11:47]
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toddfandol: heh [12:04]
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up_the_ironsandol: it hasn't been a big itch [12:49]
andol: ice uses mail2 as its mail relay, so it should appear that mail2 is the sender (even if originated at ice) [13:01]
andolup_the_irons: Agree it not being a big problem, but if you are not going to use spf in a useful maner, why even bother having the dns entry? Not that it is really a problem for me, mostly curious. [13:02]
up_the_ironsandol: it was useful at the time when i set it up :)
andol: to be honest, i thought it was still "working"
andol: i'm open to suggestions on changes... spf record knowledge isn't a strong point of mine
[13:03]
andolup_the_irons: Well, unless you want to pay a bit of attention of keeping it updated I would probably just have skipped using SPF completly.
Otherwise my personal preferense is using SPF in a pure whitelisting sense, falling back on a neutral ?all.
[13:05]
up_the_ironsandol: i thought it _was_ updated; our mx _does_ send emails [13:07]
andolup_the_irons: Well, the e-mails I got from you didn't come from mail.mailroute.net anyway. [13:08]
up_the_ironsalthough, now that i think about it, mailroute is the mx and mail2.arp can also send...
i can't remember the good spf record generator i used once...
[13:08]
andol(Never understood why people would use the ~all softfail for long term use. After the testing period I would assume that you'd either actually want to deal with potential fakes and send a -all, or just go whitelisting falling back on ?all.) [13:10]
up_the_ironsprobably b/c they don't fully understand ~all softfail (like me :) [13:11]
andolCould be :) Also, I guess most examples I've seen include the ~all. [13:14]
up_the_ironsandol: i think you might prefer: "v=spf1 mx a:mail2.arpnetworks.com include:tenderapp.com ~all"
i should test that for now...
[13:20]
andolup_the_irons: Yepp, looks good [13:23]
up_the_irons:) [13:24]
andolWell, the tenderapp.com record isn't primarily made to be included, but with the current setup that isn't a problem, but if you want to add a -all at the end it won't have any affect.
...or might not
The thing about includes aren't as much that they are included as that they are evaluated.
[13:25]
up_the_ironsandol: tender says to add "include:tenderapp.com" so i did :)
right now, the record is:
v=spf1 mx a:mail.arpnetworks.com a:mail2.arpnetworks.com include:tenderapp.com ~all
so i'll leave it like that for a few days to test it out
[13:36]
andolWell, turns out that I was in the wrong about the last part anyway. Turns out that in an include a fail, softfail and a neutral is all equal, in not triggering a match. [13:38]
up_the_ironsah [13:40]
andol(RFC 4408: chapter 5.2) [13:41]
jdoebe careful about includes.
if a domain you include doesn't have an SPF record, your soft fail turns into a hard fail.
[13:48]
andoljdoe: Isn't it more like causing a PermError? Not that that is any better. [13:52]
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jdoeandol: it causes a perm error, which often causes things to reject (like gmail)
so I'm using terminology a bit loosely :P
[13:58]
andolWell, if nothing else tenderapp.com seems to be using a solid DNS hosting. [14:01]
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up_the_ironsjdoe: tenderapp is all about emails, pretty sure their SPF record will stay good. [14:20]
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