After upgrading to sssd-2.4.1-1.fc33.x86_64, I began seeing the following in my 
sssd_be log:

Bug: Trying to get hostent from a name-less server
Server without name and address found in list.

These entries occur at the time a user logins into cyrus-imapd via saslauthd.
salsauthd uses the PAM backend, which uses SSSD.  I increased the log-level and
see the following, but am not sure how to interpret it, or if this is really an
issue.  There are no problems with the users logging into cyrus-imapd.

Any pointers are appreciated.  Thanks.

Feb 16 10:17:52 sssd_be[724]: Marking port 0 of duplicate server 
'ipa.example.com' as 'working'
Feb 16 10:17:52 sssd_be[724]: DP Request [PAM Preauth #18362]: Request handler 
finished [0]: Success
Feb 16 10:17:52 sssd_be[724]: DP Request [PAM Preauth #18362]: Receiving 
request data.
Feb 16 10:17:52 sssd_be[724]: DP Request [PAM Preauth #18362]: Request removed.
Feb 16 10:17:52 sssd_be[724]: Number of active DP request: 1
Feb 16 10:17:52 sssd_be[724]: sssd.dataprovider.pamHandler: Success
Feb 16 10:17:52 sssd_be[724]: Constructed uri 'ldap://ipa.example.com'
Feb 16 10:17:52 sssd_be[724]: Bug: Trying to get hostent from a name-less server
Feb 16 10:17:52 sssd_be[724]: Server without name and address found in list.
Feb 16 10:17:52 sssd_be[724]: All data has been sent!

-- 
Anthony - https://messinet.com
F9B6 560E 68EA 037D 8C3D  D1C9 FF31 3BDB D9D8 99B6

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