The last time I checked, all mails from your servers were still rigorously blocked by T-Online (a very important provider in Germany).

I tried for nearly a year to solve the issue together with your support, but I was completely ignored. I even contacted T-Online's postmasters myself, who said you are not adhering to basic sender standards. I asked your support to get in touch with the Telekom postmasters directly, but you claimed that they would not get back to you - this is obviously nonsense, because I spoke to them myself and always received an immediate reply. So the question is: have you at least noted this issue? Or are you just continuing to ignore it and keeping acumbamail unusable in Germany?

Oh and please don't give me DMARC, DKIM etc. again - this was of course all set up correctly.