Either enter full domain or email that should be blocked or use  glob-style wildcards to match other patterns. E.g "@*.mail.com"  Please note that we do not include "@" in the match so you  should do that in the pattern.
Sekcem isem n taɣult neɣ tansa n yimayl ara tesweḥleḍ, neɣ seqdec  isekkilen imuta n wanaw glob akken ad tawiḍ ugar n umṣada d tneɣrufin-nniḍen. Amedya "@*.mail.com"  Ma ulac aɣilif, ẓer d akken ur nsedday ara "@" deg umṣada, ilaq ad ternuḍ taneɣruft.