Problem do not working SMTP

Please…

Non-authoritative answer:
Name:	mail.skrios.xyz
Address: 188.114.96.3
Name:	mail.skrios.xyz
Address: 188.114.97.3
Name:	mail.skrios.xyz
Address: 2a06:98c1:3120::3
Name:	mail.skrios.xyz
Address: 2a06:98c1:3121::3
root@ubuntu-2gb-fsn1-1:~/hestiacp/src# whois  188.114.96.3
% This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See http://www.ripe.net/db/support/db-terms-conditions.pdf

% Note: this output has been filtered.
%       To receive output for a database update, use the "-B" flag.

% Information related to '188.114.96.0 - 188.114.99.255'

% Abuse contact for '188.114.96.0 - 188.114.99.255' is '[email protected]'

inetnum:        188.114.96.0 - 188.114.99.255
netname:        CLOUDFLARENET-EU
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