Hi,
My smtp server is currently using identlookup and I think it is one reason that
I don't receive a ton of Spam.
Unfortunately some of my users receive mails from a domain that has a very short
timeout and drops identlookups at the firewall, instead of rejecting them. This
results in no mails coming through to my users from the domain in question and
me getting asked how many other domains does this happen from. My own
approximate count indicates that only 1.6% of the failing connections are from
legit servers.
So my questions are really :
What is your experience with identlookups ?
Should I stop using it on my server and risk more Spam ?
When you discover a problem with a server what do you do ?
Do any of you have automated scripts to inform the postmaster in the other
end that you do have a server and it actually can respond ?
Does courier have any filtering function for this very special scenario ?
Sorry for the long rant..
Regards
Kristian Duus Østergaard
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