On Tue, 2011-10-18 at 23:55 +0200, Karsten Bräckelmann wrote: > The DNS TTL appears to be 12 hours, and a good share of mail (definitely > true for ham, only partly for spam) is received from a rather limited > number of distinct SMTP servers, only. With a local, caching DNS server > the number of mail a system can handle per day before exceeding the free > usage limit is *much* higher.
Oops -- higher, though not that much higher. Unless your local, caching DNS also does negative caching... -- char *t="\10pse\0r\0dtu\0.@ghno\x4e\xc8\x79\xf4\xab\x51\x8a\x10\xf4\xf4\xc4"; main(){ char h,m=h=*t++,*x=t+2*h,c,i,l=*x,s=0; for (i=0;i<l;i++){ i%8? c<<=1: (c=*++x); c&128 && (s+=h); if (!(h>>=1)||!t[s+h]){ putchar(t[s]);h=m;s=0; }}}