Okay, thanks, I'll pass this along to the site owners. -- Alex Brotman Sr. Engineer, Anti-Abuse & Messaging Policy Comcast
> -----Original Message----- > From: mailop <mailop-boun...@mailop.org> On Behalf Of Viktor Dukhovni > via mailop > Sent: Monday, March 24, 2025 8:08 AM > To: mailop@mailop.org > Cc: Viktor Dukhovni <postmas...@dukhovni.org> > Subject: Re: [mailop] [EXTERNAL] Re: USPS > > On Mon, Mar 24, 2025 at 11:54:48AM +0000, Brotman, Alex wrote: > > > Thanks, and so you think in periods where traffic is greater that the > > responses are taking too long, so the whole thing is causing timeouts > > when validation is attempted? > > Combining large responses that require TCP fallback, and might not arrive if > large EDNS0 UDP sizes are negotiated, with short TTLs, ask for trouble. There > is a much higher probability of transient failures. There could be other > issues > (rate limiting on their end, despite the low TTLs inviting more queries, > ...), but > basically this setup is operated at some distance from best-practice. > > -- > Viktor. > _______________________________________________ > mailop mailing list > mailop@mailop.org > https://urldefense.com/v3/__https://list.mailop.org/listinfo/mailop__;!!CQl3 > mcHX2A!AX5w2zamBHm- > SWcFLZ06DsCJ6Sy3WjmANBNpGhlZMBRckrO6Zt5EuDq- > 5UwCOdBkIbP3yAIkhO6e-S4Yz9c$ _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
