ovh.net

[xpunkt]

http://multirbl.valli.org/lookup/1.mo1.mail-out.ovh.net.html

could this be used ?, see repution and spfbl.net

maybe just find asn number, and use as number to accept or deny, i see many incorrect mta setups from ovh that use custommer only ports in hope thay are open to abuse :/

no real mta do this, i have solved most on blocking ips that are not known to have custommers here from, eg not blacklist random, but whitelist known, the blacklist is for my part bigger then use the whitelist alternative