Saturday, September 24, 2016

protect postfix from outside

iptables -A INPUT -p tcp -s 127.0.0.0/8 --dport 25 -j ACCEPT
iptables -A INPUT -p tcp --dport 25 -j DROP
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odd string diff

 https://leetcode.com/problems/odd-string-difference/ Beats 19.92% of users with Java   class Solution { public String oddString ( S...