> To be complete though, I must add that there are two drawbacks to > greylisting : Three. Occasionally our users find themselves unreachable by certain people and struggle to comprehend why. It is this very issue of broken mailservers that simply never retry. It is easy enough to dig out of the logs an IP address and add it to the whitelist, but it does disrupt the normal flow of emails and can take some days before the problem is identified, reported and fixed.
Ken > > * not immediate delivery for first mail is annoying when you > register on a website and have to wait... some minutes before > being able to use the account. I use dummy gmail address for > the purpose but then I have to switch to my real address on > the site and... you see, it's eating up useful time to do > something rather "stupid". > > * greylisting works with triplets : IP of sending mail server, > sender's email and recipient's email. When dealing with smtp > farms, the same message may come out from any of the server > and thus be greylisted several times until it is finally > submitted with one of the greylisted IP. Either you live with > it (I tell those who complain that their mail provider has a > broken setup, not sure if I'm right there :-)) or you whitelist > those domains (hotmail is one of them). > > > Regards, > > JC > > > > ------------------------------------------------------------------------ > > Subject: > Re: [courier-users] Courier-MTA + Greylisting > From: > LuKreme <[email protected]> > Date: > Wed, 11 Mar 2009 15:06:33 -0600 > To: > [email protected] > > To: > [email protected] > > > On 11-Mar-2009, at 08:12, [email protected] wrote: >> Either you live with it (I tell those who complain that their mail >> provider has a broken setup, not sure if I'm right there :-)) or you >> whitelist those domains (hotmail is one of them). > > Yeah, their setup is not broken. As far as I know there is no > requirement that the same machine sends a retry as the machine that > sent the original message. What IS broken are the many server that > will never retry. One attempt, if that tempfails, the message is gone. > > > > ------------------------------------------------------------------------ > > Subject: > [courier-users] more on SPF question > From: > "Ricardo Kleemann" <[email protected]> > Date: > Wed, 11 Mar 2009 14:28:32 -0700 > To: > [email protected] > > To: > [email protected] > > > Hi all, > > Still on this subject, I have a different message with the following, > which I would have liked for SPF to reject. > > Old-Received-SPF: none (Address does not pass the Sender Policy > Framework) > SPF=HELO; sender=dslb-092-072-107-211.pools.arcor-ip.net; > remoteip=::ffff:92.72.107.211; > remotehost=dslb-092-072-107-211.pools.arcor-ip.net; > helo=dslb-092-072-107-211.pools.arcor-ip.net; > receiver=email1.americasnet.com; > Old-Received-SPF: softfail (Address does not pass the Sender Policy > Framework) > SPF=MAILFROM; [email protected]; > remoteip=::ffff:92.72.107.211; > remotehost=dslb-092-072-107-211.pools.arcor-ip.net; > helo=dslb-092-072-107-211.pools.arcor-ip.net; > receiver=email1.americasnet.com; > > So this message got through and I'm trying to understand what else I'm > missing in my SPF records. > > What exactly does the "softfail" mean? I do have SPF records for > listas.americasnet.com. > > However I don't have an SPF record for email1.americasnet.com, would > that be the reason for not being rejected? > > thanks > Ricardo > > > > ------------------------------------------------------------------------ > > Subject: > Re: [courier-users] have aliases functional like gmail? > From: > Sam Varshavchik <[email protected]> > Date: > Wed, 11 Mar 2009 21:54:31 -0400 > To: > Courier Users List <[email protected]> > > To: > Courier Users List <[email protected]> > > > Jerome Bullert writes: > >> >> The problem with using hyphens, of course, is that last names, and >> therefore usernames, are commonly hyphenated, which could lead to >> confusion or to emails intended for one user being delivered to another >> user. >> >> Is there any way to make this character configurable (to use the plus >> sign, rather than the hyphen, for instance)? >> >> Or even, if necessary, to change the character used for this somewhere >> in the source code before compiling? > > No, there is no single switch. There are a lot of dependencies on the > established naming scheme, for example couriermlm. > > > > ------------------------------------------------------------------------ > > Subject: > [courier-users] max connections > From: > Ken Perl <[email protected]> > Date: > Thu, 12 Mar 2009 12:23:02 +0800 > To: > Courier Users List <[email protected]> > > To: > Courier Users List <[email protected]> > > > I've set the MAXDAEMONS=50000, MAXPERC=50000, MAXPERIP=5000, however, > I still got the connection refused errors when it reaches around the > default max daemons number 40. > > what else should I change? > > > > ------------------------------------------------------------------------ > > Subject: > Re: [courier-users] max connections > From: > Sam Varshavchik <[email protected]> > Date: > Thu, 12 Mar 2009 08:03:01 -0400 > To: > Courier Users List <[email protected]> > > To: > Courier Users List <[email protected]> > > > Ken Perl writes: > >> I've set the MAXDAEMONS=50000, MAXPERC=50000, MAXPERIP=5000, however, >> I still got the connection refused errors when it reaches around the >> default max daemons number 40. >> >> what else should I change? > > Did you restart Courier, after making the changes in the configuration? > > Furthermore, you should not get 'connection refused' in any case. If > you reached MAXDAEMONS, the connection should be made, but there will > be no response until one of the existing connections drops off. If you > reached MAXPERC or MAXPERIP, the connection should still be made, then > you'll be immediately disconnected. > > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------------ > Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are > powering Web 2.0 with engaging, cross-platform capabilities. Quickly and > easily build your RIAs with Flex Builder, the Eclipse(TM)based development > software that enables intelligent coding and step-through debugging. > Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com > ------------------------------------------------------------------------ > > _______________________________________________ > courier-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/courier-users > ------------------------------------------------------------------------------ Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are powering Web 2.0 with engaging, cross-platform capabilities. Quickly and easily build your RIAs with Flex Builder, the Eclipse(TM)based development software that enables intelligent coding and step-through debugging. 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