On Mon, Jun 11, 2018, at 13:27, Brielle Bruns wrote: > Been seeing an awful lot of these lately on one of my email servers > (exim based): > > > 2018-06-11 14:15:44 no host name found for IP address 157.25.104.90 > 2018-06-11 14:15:47 rejected HELO from [157.25.104.90]: syntactically > invalid argument(s): *.* > 2018-06-11 14:21:42 no host name found for IP address 185.221.172.140 > 2018-06-11 14:21:43 rejected HELO from [185.221.172.140]: syntactically > invalid argument(s): *.*
How would you blacklist *.* in a system that uses DOS-similar glob wildcard blacklisting? Unless there is an escape character (unlikely), this is likely very difficult to handle for an unskilled admin, and certain platforms will make this more difficult. The answer is ?.? as most such systems do allow for "? matches exactly one character", but this is not particularly intuitive to a lot of less skilled admin types in the SMB/SOHO worlds. _______________________________________________ mailop mailing list mailop@mailop.org https://chilli.nosignal.org/cgi-bin/mailman/listinfo/mailop
