your reverse DNS is not matching for 157.161.57.26 as it returns aleka.scout.ch.
list.scout.ch. is not the same as aleka.scout.ch You could do instead list.scout.ch MX 50 aleka.scout.ch or list.scout.ch CNAME aleka.scout.ch. > On 31 Mar 2020, at 10:05, Benoît Panizzon <paniz...@woody.ch> wrote: > > Hi List > > Has anyone seen this error message and has a clue about the cause? > > ... while talking to mxbw.lb.bluewin.ch<http://mxbw.lb.bluewin.ch>.: > > <****@bluewin.ch> > (reason: 550-5.1.0 MAIL FROM: > <*****@list.scout.ch> > Unable to verify MX-Record for domain list.scout.ch) > > list.scout.ch. 3600 IN MX 50 list.scout.ch. > list.scout.ch. 3600 IN A 157.161.57.26 > list.scout.ch. 3600 IN AAAA > 2001:4060:dead:beef:200:e2ff:fe70:3b2f > list.scout.ch. 3600 IN TXT "v=spf1 a:list.scout.ch > a:akela.scout.ch a:list.scoutnet.org -all" > > Can't find anything wrong with the MX entry. Actually an MX is not even > really necessary. > > -Benoît- > > > _______________________________________________ > swinog mailing list > swinog@lists.swinog.ch > http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog _______________________________________________ swinog mailing list swinog@lists.swinog.ch http://lists.swinog.ch/cgi-bin/mailman/listinfo/swinog
