Gentoo Archives: gentoo-user

From: Preston Hagar <prestonh@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Greylisting vs. reject_rbl_client
Date: Fri, 25 Aug 2006 21:31:37
Message-Id: 8f5897560608251424s2b57ec31q5049d24409066d87@mail.gmail.com
In Reply to: Re: [gentoo-user] Greylisting vs. reject_rbl_client by kashani
1 On 8/25/06, kashani <kashani-list@××××××××.net> wrote:
2 >
3 > Preston Hagar wrote:
4 > > Using postgrey on
5 > > my own personal server, I make it delay for 5 minutes. Most mail
6 > > servers will keep trying and I will get the message within 10-15 minutes
7 > > max. I have had a few times, though, that the mail took 4 or 5 hours
8 > > before it was tried again.
9 >
10 > hotmail will retry every minute for 3 minutes. If you make the
11 > delay 30
12 > secs you will see mail come in much quicker from a number of places
13 > without accepting more spam. It's been my experience that mail is either
14 > retried or it is not and the actual time of the delay doesn't matter.
15 > Also setting the whitelist time to 63 days will keep infrequent emailers
16 > from getting greylisted as often.
17 >
18 > You might also checkout sqlgrey which has some nice twists like
19 > whitelisting a domain after x successful deliveries in y time. The
20 > ebuild is in bugzilla.
21 >
22 > http://bugs.gentoo.org/show_bug.cgi?id=71535
23 >
24 > kashani
25 > --
26 > gentoo-user@g.o mailing list
27
28
29 postgrey does the whitelist a domain after so many sucessful tries. I do
30 use that as well. Don't get me wrong, most of my mail is delivered right
31 after the 5 minute limit. I just wanted to warn the OP that on a few
32 occasions, mail can take longer. According to RFC specs, it can take up to
33 4 hours. With the real estate company I work for, even one message taking 4
34 hours is unacceptable.
35
36 Thanks for your input. I will check out sqlgrey.
37
38 Preston