On 18/12/2020 23:00, Brandon Long wrote: > So, returning 250 OK when delivering a message to spam is bad form > now? Or a 4xx response to potential spam that you're not quite sure > about?
With Gmail's self filtering folders, for many smaller hosts the chances of a message which gets a 250 response code being "received" (reach the eyeballs of the intended recipient) is lower than not. So 250 says more about Gmail internals (e.g. the message wasn't rejected by the first gatekeeper) than it does about successful delivery. End users still complain that messages weren't delivered, and we have to investigate each time. > Also, there is no provision in our spam system for dropping mail, > it's reject, deliver or bounce... I guess workspace does add > administrator actions like admin quarantine or change destination. That's nice to know, but the fact is that messages accepted by Gmail sometimes disappear without a trace. No doubt that the systems involved on your side are massive and complex, but that shouldn't be our problem as indie hosts. Sam. > On Fri, Dec 18, 2020, 12:11 PM Sam Tuke via mailop <mailop@mailop.org > <mailto:mailop@mailop.org>> wrote: > > FWIW, partly inspired by this thread, I blogged about the week's > Gmail fun here: > https://lightmeter.io/googledown-happens-every-day-for-mailops-admins/ > <https://lightmeter.io/googledown-happens-every-day-for-mailops-admins/> > > Sam. > > On 16/12/2020 15:34, Dr. Christopher Kunz via mailop wrote: >> Am 15.12.20 um 00:56 schrieb Bez Thomas via mailop: >>> Anyone else seeing repeated, but intermittent, 550-5.1.1s from >>> Gmail for valid addresses? >>> >>> Diagnostic-Code: smtp; 550-5.1.1 The email account that you tried >>> to reach does not exist. Please try 550-5.1.1 double-checking the >>> recipient's email address for typos or 550-5.1.1 unnecessary >>> spaces. Learn more at 550 5.1.1 >>> https://support.google.com/mail/?p=NoSuchUser >>> <https://support.google.com/mail/?p=NoSuchUser> >>> >> FWIW, this was acknowledged and marked as resolved by Google now >> [1], and has been discussed elsewhere [2]. >> >> [1] >> https://www.google.com/appsstatus#hl=en&v=issue&sid=1&iid=a8b67908fadee664c68c240ff9f529ab >> <https://www.google.com/appsstatus#hl=en&v=issue&sid=1&iid=a8b67908fadee664c68c240ff9f529ab> > >> > [2] https://news.ycombinator.com/item?id=25435916 > <https://news.ycombinator.com/item?id=25435916> >> >> Best regards, >> >> >> --ck >> >> >> _______________________________________________ mailop mailing >> list mailop@mailop.org <mailto:mailop@mailop.org> >> https://list.mailop.org/listinfo/mailop >> <https://list.mailop.org/listinfo/mailop> >> > _______________________________________________ mailop mailing list > mailop@mailop.org <mailto:mailop@mailop.org> > https://list.mailop.org/listinfo/mailop > <https://list.mailop.org/listinfo/mailop> > _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
