On Mon, Nov 26, 2018, Stefan Bauer wrote: > ehlo test > 250-mx0.esb.de > 250-8BITMIME > 250-SIZE 52428800 > 250 STARTTLS
> But the minus "-" is missing in STARTTLS correct? No: it's the last line, hence no "-". > Is there a known workaround available? Looks like it should work... seems you have to do some debugging (increase logging?) Or was that only a temporary problem (i.e., can you reproduce it)?