[OT] HELP!!! mail attack

Tim ignored_mailbox at yahoo.com.au
Thu Mar 27 09:12:13 UTC 2008


Craig:
>>> There's actually a way around it in a crunch...I've put a 5 minute
>>> window.

Tim:
>> That's really not a solution.  While your server may say, come back in
>> 5, you don't have any control over how, when, or if, the sender will
>> actually retry.

Patrick:
> Afaik greylisting uses an RFC compliant method. So if the sending
> mailserver does not resend after a while then it is broken and should be
> fixed. FWIW I have used greylisting for more than a year now and in all
> that time I have only once seen a mailserver not resend.

And for some, once is more than enough.  I don't use any spam filters,
as one false positive is more than enough, and I've seen many more than
one.

I'm not sure that a server really *has* to resend, but it still leaves
you with a problem:  You can't reconfigure someone else's server.  And,
you mightn't even be able to mail them to discuss it.

The point I was making, at the start, is to go into it with your eyes
open.  Be aware that you may lose mail, important mail, permanently.

-- 
Don't send private replies to my address, the mailbox is ignored.
I read messages from the public lists.




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