On Fri, Nov 17, 2023 at 02:34:19PM +0000, Lukas Tribus via mailop wrote: > On Fri, 17 Nov 2023 at 10:00, Jeroen via mailop <mailop@mailop.org> wrote: > > > > > We use an MTA which supports STARTTLS, sending the message data > > > through an encrypted channel for servers which support it (like > > > Google). > > > > Thank you for enabling opportunistic STARTTLS - you've stepped up the > > game for both yourself and possible clients. However, it is not > > something that will mitigate the Gmail deferrals. We have been using > > this for years and still have deferrals every now and then. > > Two things can be true at the same time. > > The OP did not say that you will never have deferrals once you turn on > STARTTLS. > He said that he had deferrals without STARTTLS that went away with STARTTLS. > > It is definitely possible that STARTTLS influences behaviours and > limits, just as IPv4 vs IPv6 does. > > Google probably wants you to enable STARTTLS, so reducing sending > limits for non STARTTLS senders can make sense from Google's POV. > > > Lukas
I've just discovered that after Dec 4 (see archive.org), Google added a table at the beginning of this page: https://support.google.com/mail/answer/81126 which I'll reproduce in text: Sender requirement Date added Use a TLS connection for transmitting email Dec. 2023 Keep spam rates below 0.30% Oct. 2023 If anyone haven't seen that page recently, it is worth reading and rereading. It's the single most useful page I've ever seen about sending messages to Gmail. Omar -- BIGLIST.com _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
