On Tue 30 Aug 2016 at 19:16:10 +0100, Lisi Reisz wrote: > On Tuesday 30 August 2016 18:50:21 deloptes wrote: > > I have not seen recently undelivered mails > > Lucky you!
Not luck, it's good management. Receiving SMTP servers accept messages which are RFC compliant. If they do not they are playing silly buggers. Have you ever had a message rejected on the grounds it was not RFC compliant? If so (and you are using a smarthost) you need to have words with your ISP. > [had to snip quotation from rejecting notification because Zen identified the > email as spam!!] Don't really follow this. But you allow Zen to determine the nature of your mails? You also give Royal Mail permission to open and peruse the letters you send and receive? > So one large and dominating ISP is rejecting emails from an inconvenient, > smaller, rival because there are "too many" of them. Don't follow this either.