On Thu, Feb 4, 2016 at 3:55 PM, Brandon Long <bl...@google.com> wrote:
> > > On Thu, Feb 4, 2016 at 2:27 PM, Andreas Schamanek < > scham...@fam.tuwien.ac.at> wrote: > >> >> Hi Brandon, >> >> On Thu, 4 Feb 2016, at 13:41, Brandon Long wrote: >> >> > It is a netblock quota you're hitting, yes. As we see more and >> > larger hit and run spam jobs from previously unknown or low volume >> > IPs and netblocks, the low volume senders are caught in the cross >> > fire. >> > >> > I'll ping the spam team about the messaging again, saying IP is >> > definitely wrong there. >> >> Thanks! >> >> > And I can ping them about better handling about this, they've made >> > some improvements recently, but it's a hard problem. >> >> That would be even better. But I understand that the problem is hard. >> I am active in the antispam community, too. >> >> > Also, the bulk sender guidelines don't only apply to bulk senders, >> > in particular, you have no authentication for your messages. >> >> For one, I don't believe in DKIM. But more importantly, it's just not >> worth the efforts to implement DKIM, DMARC, DNSSEC etc. for 15 msg/day, >> or at least it wasn't so far. >> > > If you don't believe in message authentication, you're going to have a bad > time. > > And I didn't talk about dmarc or dnssec, and at the low end, SPF is kind > of trivial. > > Yes SPF or DKIM on emails is the bare minimum to do for an email administrator nowadays. I think the community is starting to treat unauthenticated emails as a problem. If you were trying to send over IPv6, unauthenticated emails would go nowhere. About email authentication metrics: https://googleonlinesecurity.blogspot.com/2013/12/internet-wide-efforts-to-fight-email.html The only thing that may help you in a bad environment is to clearly claim who you are by authenticating your emails, it is not anymore a question of belief in a technology, we passed that point a while back.
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