Do any other also got troubles in messaging @bluewin.ch customers?
Nov 2 14:32:54 postfix/smtp[8102]: <XXXX>: to=XXXXX@bluewin.ch, relay=mxbw.lb.bluewin.ch[195.186.99.50]:25, delay=0.07, delays=0/0/0.03/0.03, dsn=5.5.0, status=bounced (Protocol error: host mxbw.lb.bluewin.ch[195.186.99.50] said: 250 2.0.0 RCPT TO accepted (in reply to DATA command))
TIA - Dan