On 4/19/20 12:28 PM, S.Bob wrote: > All; > > > I installed sendmail via yum, but if I test it like this: > > > The original message was received at Sun, 19 Apr 2020 10:02:56 -0600 > from localhost [127.0.0.1] > > ----- The following addresses had permanent fatal errors ----- > <sbob at quadratum-braccas.com> > (reason: 554 5.7.1 Service unavailable; Client host [50.243.150.81] > blocked using xbl.spamhaus.org.rbl.local; https://www.spamhaus > .org/query/ip/50.243.150.81) Is 50.243.150.81 your system's IP address? If so, as this shows, that IP is on spamhaus' blacklist of addresses. Thus, your sendmail is working fine. Problem is elsewhere. -- Tim Evans |5 Chestnut Court 443-394-3864 |Owings Mills, MD 21117