Some of the recent surge of spam emails going around uses a set of .ru domains with a discernible pattern of b*redret.ru.
Blocking these access to these domains and/or IPs might be a useful proactive step.
173.212.222.54 (Hostnoc, Scranton)
buredret.ru
195.254.135.72 (FastWeb SRL, Romania. Recommend blocking 195.254.134.0/23)
bqredret.ru
btredret.ru
bwredret.ru
bzredret.ru
89.208.34.116 (Digital Networks SRL, Russia. Recommend blocking 89.208.34.0/24)
baredret.ru
biredret.ru
bvredret.ru
94.199.51.108 (23vnet Kft, Hungary)
bkredret.ru
blredret.ru
bpredret.ru
bsredret.ru
95.163.89.193 (Digital Networks JSC, Russia. Recommend blocking 95.163.64.0/19)
bbredret.ru
bcredret.ru
bdredret.ru
beredret.ru
bfredret.ru
bgredret.ru
bhredret.ru
Unallocated / invalid IPs
boredret.ru
brredret.ru
bjredret.ru
bmredret.ru
bnredret.ru
bxredret.ru
byredret.ru
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