Explore the NANOG 82 Virtual Expo  Doors open TODAY

NANOG 82 EXPO: Interact + Network Virtually *The latest technology, all in one space* The NANOG 82 Expo is right around the corner! Network and interact with reps from top tech companies from your

[NANOG-announce] Explore the NANOG 82 Virtual Expo  Doors open TODAY

NANOG 82 EXPO: Interact + Network Virtually *The latest technology, all in one space* The NANOG 82 Expo is right around the corner! Network and interact with reps from top tech companies from your

RE: amazon.com multiple SPF records

Thanks for the update. Is amazon publishing that old techno since long time or it just appeared recently? I don’t recall seeing that with amazon-ses.com. Jean From: NANOG On Behalf Of Matthew V Sent: June 7, 2021 2:07 PM To: nanog@nanog.org Subject: Re: amazon.com multiple SPF

Re: amazon.com multiple SPF records

SPF 2.0 was used to designate a SenderID policy. It was experimental and never saw widespread adoption. On Mon, Jun 7, 2021 at 1:19 PM Jean St-Laurent via NANOG wrote: > What is spf2.0/pra ? > > > > Is this new? > > > > Jean > > > > *From:* NANOG *On Behalf Of *Alec > Peterson > *Sent:* June

Re: amazon.com multiple SPF records

On 2021-06-07 1:17 p.m., Jean St-Laurent via NANOG wrote: What is spf2.0/pra ? Is this new? This is the old (now widely abandoned/depreciated) Sender ID standard. ~ Matt

Re: amazon.com multiple SPF records

Jean St-Laurent via NANOG writes: > What is spf2.0/pra ? https://datatracker.ietf.org/doc/html/rfc4406 It doesn't say April 1st, but it is pretty close Bjørn

RE: amazon.com multiple SPF records

What is spf2.0/pra ? Is this new? Jean From: NANOG On Behalf Of Alec Peterson Sent: June 7, 2021 10:35 AM To: Brad Barnett Cc: nanog@nanog.org Subject: Re: amazon.com multiple SPF records Hmm, are you sure? [ec2-user@ip-10-0-0-50 ~]$ dig amazon.com txt

Re: IPv6 and multicast listener discovery

Are your links or hosts limited in some way or broadcast domains of some unreasonable size? Most of the competent switching or managed wireless products will snoop or otherwise handle this overhead in a sane manner. Otherwise this at best would seem to be an over-optimization. >From my

A survey on BGP MRAI timer values in practice

Hi NANOG, This is Shahrooz, a fourth-year CS Ph.D. student at the University of Massachusetts Amherst working under the supervision of prof. Arun Venkataramani. We often read that the Internet (i.e. BGP) has a long convergence delay. But why is it so slow? And can we (researchers) do

Re: amazon.com multiple SPF records

Hmm, are you sure? [ec2-user@ip-10-0-0-50 ~]$ dig amazon.com txt +short|grep spf "v=spf1 include:spf1.amazon.com include:spf2.amazon.com include: amazonses.com -all" "spf2.0/pra include:spf1.amazon.com include:spf2.amazon.com include: amazonses.com -all" [ec2-user@ip-10-0-0-50 ~]$ On Mon, Jun 7,

Re: amazon.com multiple SPF records

On Sat, Jun 05, 2021 at 07:59:40AM -0400, Brad Barnett wrote a message of 15 lines which said: > If anyone at Amazon is paying attention, you have duplicate spf1 records > for amazon.com: If so, it is now gone. Not one RIPE Atlas probe see this duplication: % blaeu-resolve -r 100 --ednssize

Re: amazon.com multiple SPF records

Not on my servers, but I clearly just did a lookup. C:\Users\jluthman>dig -t TXT amazon.com|findstr spf amazon.com. 900 IN TXT "spf2.0/pra include: spf1.amazon.com include:spf2.amazon.com include:amazonses.com -all" amazon.com. 900 IN TXT "v=spf1

Re: NANOG Digest, Vol 161, Issue 8

We swear by the Brother P-touch EDGE PTE550W. It’s reasonably priced and offers an extensive feature set. In addition to the QWERTY keyboard the built in WiFi allows us to connect it to our laptops and/or smartphones to print out labels that we generate from Netbox. Best, Henry On Sun, Jun 6,

Re: NAT devices not translating privileged ports

For Linux iptables SNAT (used with --to-source), the default is to change the packet as little as possible. https://linux.die.net/man/8/iptables "If no port range is specified, then source ports below 512 will be mapped to other ports below 512: those between 512 and 1023 inclusive will be mapped

amazon.com multiple SPF records

If anyone at Amazon is paying attention, you have duplicate spf1 records for amazon.com: # dig -t TXT amazon.com | grep spf amazon.com. 281 IN TXT "spf2.0/pra include:spf1.amazon.com include:spf2.amazon.com include:amazonses.com -all" amazon.com. 281 IN