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@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.