Re: [Dovecot] dovecot performance

2008-08-15 Thread tomas
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Thu, Aug 14, 2008 at 03:38:50PM -0300, Giorgenes Gelatti wrote: Hello All, [...] It is well known that preforking is a good pratice if you want to achieve a higher performance. When I was asked about it I readily answered: of course it does.

Re: [Dovecot] Webmail app ... again.

2008-08-15 Thread Eduardo M KALINOWSKI
Timo Sirainen escreveu: I've heard that imapproxy isn't all that useful with Dovecot once auth cache is enabled and set large enough. It'll then just basically replace Dovecot's process fork(s) with the overhead of its own. If I understand Dovecot's auth caching, it will save DB lookups (or

Re: [Dovecot] Marking as Read causes Body.Peek on ALL messages - Reasonable?

2008-08-15 Thread Daniel Watts
Charles Marcus wrote: On 8/13/2008, Daniel Watts ([EMAIL PROTECTED]) wrote: The more I use Thunderbird the more I find it totally insane. Did you file a bug report? I imagine this is something that could use some fixing, and there is a much higher chance that the TBird devs will listen than

[Dovecot] Simplest (static?) build config for loopback access?

2008-08-15 Thread FZiegler
I am installing Dovecot for the sole purpose of maintaining a local mail store that I could 1) manage with any client; 2) keep duplicated on several machines, using Unison; 3) hopefully, index using Spotlight (http://article.gmane.org/gmane.mail.mh-e.user/1308 ...). In particular, I have no

Re: [Dovecot] Webmail app ... again.

2008-08-15 Thread Timo Sirainen
On Aug 15, 2008, at 2:22 PM, Eduardo M KALINOWSKI wrote: Timo Sirainen escreveu: I've heard that imapproxy isn't all that useful with Dovecot once auth cache is enabled and set large enough. It'll then just basically replace Dovecot's process fork(s) with the overhead of its own. If I

Re: [Dovecot] Webmail app ... again.

2008-08-15 Thread Eduardo M KALINOWSKI
Timo Sirainen wrote: On Aug 15, 2008, at 2:22 PM, Eduardo M KALINOWSKI wrote: If I understand Dovecot's auth caching, it will save DB lookups (or sequential passwd-file lookups, etc), but it will still need to spawn a new imap process for each connection the webmail does. With imapproxy, the

Re: [Dovecot] Migrating mbox to maildir

2008-08-15 Thread Kenneth Porter
On Thursday, August 14, 2008 3:46 PM -0400 Mike Hobbs [EMAIL PROTECTED] wrote: I'd like to use maildir with all my new users, but I'd like to be able to continue using mbox for my old users and slowly convert them as I get time. I did this a week ago for about a dozen users and the system

[Dovecot] SpamAssassin and Maildir with Dovecot

2008-08-15 Thread Kenneth Porter
A patch has been proposed for SpamAssassin to process Maildir folders of spam: https://issues.apache.org/SpamAssassin/show_bug.cgi?id=3003 Is this patch compatible with Dovecot's implementation of Maildir? For example, is anything needed to avoid stepping on Dovecot's metadata?

Re: [Dovecot] dovecot performance

2008-08-15 Thread Giorgenes Gelatti
The master process exec's the mail process (imap or pop3) after fork. gpg 2008/8/15 Sebastien Tandel [EMAIL PROTECTED]: Hi, It is well known that preforking is a good pratice if you want to achieve a higher performance. When I was asked about it I readily answered: of course it does. For

Re: [Dovecot] SpamAssassin and Maildir with Dovecot

2008-08-15 Thread Gabriel Millerd
On Fri, Aug 15, 2008 at 11:57 AM, Kenneth Porter [EMAIL PROTECTED] wrote: A patch has been proposed for SpamAssassin to process Maildir folders of spam: Nothing on the disk looks modified by the code change, sa-learn is just reading from the disk fand altering the sa-storage as instructed by

[Dovecot] POP3 dictionary attacks

2008-08-15 Thread Kenneth Porter
I'm seeing strings of failed POP3 login attempts with obvious bogus usernames coming from different IP addresses. Today's originated from 216.31.146.19 (which resolves to neovisionlabs.com). This looks like a botnet attack. I got a similar probe a couple days ago. Is anyone else seeing these?

Re: [Dovecot] POP3 dictionary attacks

2008-08-15 Thread Charles Marcus
On 8/15/2008, Kenneth Porter ([EMAIL PROTECTED]) wrote: I'm seeing strings of failed POP3 login attempts with obvious bogus usernames coming from different IP addresses. Today's originated from 216.31.146.19 (which resolves to neovisionlabs.com). This looks like a botnet attack. I got a

Re: [Dovecot] POP3 dictionary attacks

2008-08-15 Thread Eduardo M KALINOWSKI
Charles Marcus wrote: Dictionary attacks are a fact of life these days. Just install some kind of blocking on your firewall (fail2ban is a good one), and let it take care of the worst of it.. I wonder what they want by cracking a POP3 server. Read the user's mails? It's true POP3 passwords

[Dovecot] dovecot: Fatal: Time just moved backwards by 3603 seconds.

2008-08-15 Thread Stephen Feyrer
nervous_darting_eyes Hi Everyone. /nervous_darting_eyes Ooops I just broke my dovecot install. I've looked through the mailing list archives and not found anything relevant. When I try to connect to my mail server I get this message. Could not connect to mail server chen.home.org;

Re: [Dovecot] POP3 dictionary attacks

2008-08-15 Thread Bruce Bodger
On Aug 15, 2008, at 5:39 PM, Charles Marcus wrote: You're kidding, right? Dictionary attacks are a fact of life these days. Just install some kind of blocking on your firewall (fail2ban is a good one), and let it take care of the worst of it... fail2ban will not work for this as the

Re: [Dovecot] dovecot: Fatal: Time just moved backwards by 3603 seconds.

2008-08-15 Thread Daniel L. Miller
Stephen Feyrer wrote: nervous_darting_eyes Hi Everyone. /nervous_darting_eyes Ooops I just broke my dovecot install. I've looked through the mailing list archives and not found anything relevant. When I try to connect to my mail server I get this message. Could not connect to mail server

Re: [Dovecot] POP3 dictionary attacks

2008-08-15 Thread Kenneth Porter
On Friday, August 15, 2008 5:39 PM -0400 Charles Marcus [EMAIL PROTECTED] wrote: Just install some kind of blocking on your firewall (fail2ban is a good one), and let it take care of the worst of it... Thanks, researching it now Looks like an RPM might be available for CentOS 5. There's

Re: [Dovecot] POP3 dictionary attacks

2008-08-15 Thread Michael Orlitzky
Eduardo M KALINOWSKI wrote: Charles Marcus wrote: Dictionary attacks are a fact of life these days. Just install some kind of blocking on your firewall (fail2ban is a good one), and let it take care of the worst of it.. I wonder what they want by cracking a POP3 server. Read the user's

Re: [Dovecot] dovecot: Fatal: Time just moved backwards by 3603 seconds.

2008-08-15 Thread Stephen Feyrer
Daniel L. Miller wrote: Stephen Feyrer wrote: nervous_darting_eyes Hi Everyone. /nervous_darting_eyes Ooops I just broke my dovecot install. I've looked through the mailing list archives and not found anything relevant. When I try to connect to my mail server I get this message. Could not

Re: [Dovecot] POP3 dictionary attacks

2008-08-15 Thread Kenneth Porter
--On Friday, August 15, 2008 5:51 PM -0400 Bruce Bodger [EMAIL PROTECTED] wrote: fail2ban will not work for this as the incoming ip addresses are spoofed. fail2ban would end up blocking legitimate servers. How do you spoof a source address on a TCP connection? I was unaware that was

Re: [Dovecot] POP3 dictionary attacks

2008-08-15 Thread Dean Brooks
On Fri, Aug 15, 2008 at 06:43:30PM -0300, Eduardo M KALINOWSKI wrote: Charles Marcus wrote: Dictionary attacks are a fact of life these days. Just install some kind of blocking on your firewall (fail2ban is a good one), and let it take care of the worst of it.. I wonder what they want

[Dovecot] Problem with squirrelmail and dovecot 1.1

2008-08-15 Thread Gerhard Wiesinger
Hello! I'm running squirrelmail 1.4.8 (I know this is not the latest version) and know I'm having troubles with: 1.) Folder list view 2.) Save to sent or Drafts folder. Configuration worked well. I think it has to do with the upgrade from dovecot 1.0 to 1.1 and the LIST command.

Re: [Dovecot] dovecot: Fatal: Time just moved backwards by 3603 seconds.

2008-08-15 Thread Daniel L. Miller
Stephen Feyrer wrote: Daniel L. Miller wrote: Stephen Feyrer wrote: nervous_darting_eyes Hi Everyone. /nervous_darting_eyes Ooops I just broke my dovecot install. I've looked through the mailing list archives and not found anything relevant. When I try to connect to my mail server I get

Re: [Dovecot] POP3 dictionary attacks

2008-08-15 Thread Mark Sapiro
Kenneth Porter wrote: --On Friday, August 15, 2008 5:51 PM -0400 Bruce Bodger bruce.bodger at demval.com wrote: fail2ban will not work for this as the incoming ip addresses are spoofed. fail2ban would end up blocking legitimate servers. How do you spoof a source address on a TCP connection?

Re: [Dovecot] dovecot performance

2008-08-15 Thread tomas
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On Fri, Aug 15, 2008 at 03:37:53PM -0300, Sebastien Tandel wrote: [...] [fork is fast] OK, it measures the fork instruction. But fork is using a copy-on-write mechanism ... It means that *none* of the parent's memory pages are copied. Each