Hello, it looks like mailserver which serving users@ovirt.org is on blacklist.
line from our smtp server log...Oct 17 15:31:25 hermes postfix/smtpd[14082]: NOQUEUE: reject: RCPT from lists.ovirt.org[2600:3c01::f03c:91ff:fe93:4b0d]: 554 5.7.1 Service unavailable; Client host [2600:3c01::f03c:91ff:fe93:4b0d] blocked using sbl.spamhaus.org; https://www.spamhaus.org/sbl/query/SBLCSS; from=<users-boun...@ovirt.org> to=<jiri.sle...@slu.cz> proto=ESMTP helo=<lists.ovirt.org>
Cheers, Jiri
smime.p7s
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