My SMTP-Proxy (Sophos UTM 9.004-34) logs sometimes the following log:
2013-01-10 11:37:15 H=(mx.proventhotels.com) [87.193.188.120]:35564 temporarily rejected MAIL : failed to expand ACL string "${lookup dnsdb {>\n; txt= $sender_address_domain}}": lookup of "ptr=87.193.188.120">
I have check the RNDS-Entry; everything is ok; DNS and ptr of the host;
but my astaro this message! I don't unterstand why?
I can diable "do strict RDNS checks" but is this the solution?
Can i clear a spezial database with the ptr entries?
Is this a bug?
Have anyone a idea?
Thanks
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