Re: [toaster] Fake MX problem with qmail
On Fri, 7 Sep 2007 15:02:45 +0200 Alessio Cecchi wrote: Some ISP use this trick like antispam solution: http://wiki.apache.org/spamassassin/OtherTricks It's yet another half-baked(TM) solution to the spam problem. From my experience, more than 80% of the mail received by machines acting as secondary MX is spam. Based on this, it's an usual habbit to set up secondary MX records just to collect spam. But the wiki page says that with qmail remote server you can have some problem. And in fact i have find that qmail in some situations is unable to delivery the email in this situations. It's not quite a problem. If the primary MX is not available qmail-remote will retry to send the message later. Why? Is qmail that have problem with the RFC? Yes, qmail-remote does not try to deliver the message to secondary MX(s). In this case the ISP using that completely stupid setup is responsible for the breakage caused by using fake primary MX records. -- Adi Pircalabu
Re: [toaster] Fake MX problem with qmail
On Fri, 07 Sep 2007 10:10:23 -0400 Rick Macdougall wrote: Actually, if the primary MX does not respond, qmail will try the higher MX. If the primary MX responds but temp fails the message, qmail will try the same MX again later. That's correct, thanks! -- Adi Pircalabu
Re: [toaster] Fake MX problem with qmail
Adi Pircalabu wrote: On Fri, 7 Sep 2007 15:02:45 +0200 Alessio Cecchi wrote: Some ISP use this trick like antispam solution: http://wiki.apache.org/spamassassin/OtherTricks It's yet another half-baked(TM) solution to the spam problem. From my experience, more than 80% of the mail received by machines acting as secondary MX is spam. Based on this, it's an usual habbit to set up secondary MX records just to collect spam. But the wiki page says that with qmail remote server you can have some problem. And in fact i have find that qmail in some situations is unable to delivery the email in this situations. It's not quite a problem. If the primary MX is not available qmail-remote will retry to send the message later. Why? Is qmail that have problem with the RFC? Yes, qmail-remote does not try to deliver the message to secondary MX(s). In this case the ISP using that completely stupid setup is responsible for the breakage caused by using fake primary MX records. Actually, if the primary MX does not respond, qmail will try the higher MX. If the primary MX responds but temp fails the message, qmail will try the same MX again later. Regards, Rick
[toaster] Fake MX problem with qmail
Some ISP use this trick like antispam solution: http://wiki.apache.org/spamassassin/OtherTricks But the wiki page says that with qmail remote server you can have some problem. And in fact i have find that qmail in some situations is unable to delivery the email in this situations. Why? Is qmail that have problem with the RFC? Or this trick the problem? Thanks -- Alessio Cecchi is: @ ILS - http://www.linux.it/~alessice/ Assistenza Sistemi GNU/Linux - http://www.cecchi.biz/ @ PLUG - Presidente, http://www.prato.linux.it
RE: [toaster] toaster RAID setup
RAID 5 ? Fast ? Oh come on ! The performance of any RAID array is very low comparing to a BUSY mail server if data integrity is an important aspect. I'd recommend only the Raid 10 which does a strip over two mirrors. Meaning you have 4 drives, they each are in a RAID 1 array and the two RAID 1 arrays are part of a RAID 0 array. That is some performance oriented array. The simple RAID 5 is slow when it comes to writing many small files. If you can afford it you may think of the RAID 50 array that basically requires a minimum of 6 harddrives. For a busy server you could try to put the queue in a ramdisk if you have say a 4G of RAM machine or even more. LVM is the recommended way if you need to increase the filesystem available space without blowing away your installation. EXT 3 supports on-line filesystem growing and shrinking so you will only need to stop the machine to put in the physical drive in it. I only worked with some intel based hw controllers but maybe there are controllers that support adding harddrives without stopping the machine. It is recommended to use a controller with a battery backup if you intend to use write caching (which will boost performance by the way). You should also look into tune2fs for fine tuning the filesystem, check for inode size information. Mounting the partition were you store the queue with the noatime flag is also helpful. Hope this was helpful. And please remember what this mailist is about ;) Rob - thanks. Anyone care to comment on the 3ware SATA RAID cards? At 03:29 PM 9/6/2007, you wrote: Over time I've used a few different scenarios and found all of them to work just fine. We've used the Dell CERC RAID controllers (Adaptec), and the regular branded Adaptec RAID controllers. I normally create a giant RAID 5 array out of all of my disks then just create a /boot, /, and swap partition. I do make sure I have the swap partition set to at least 2048M because files that are in and out of the tmp directory or queue directories seem to work better if you have a bigger swap. If you're wondering why I didn't manually create each individual partition, it's because of future space requirements. I might sacrifice a tiny bit of performance by breaking up the root directories into partitions, but I would rather do that than run out of disk space on one partition and have to blow away my installation completely just to resize one partition. If you're just looking for the reliability of RAID and not necessarily the performance increase of it, I'd make sure you stick to a hardware RAID 1 setup. If you have a little extra cash and room in your server, it's always better to have a RAID 5 over a RAID 1 and get some SATAII drives. I've ran into several circumstances where a RAID 1 array has failed and I still get corrupt data. I've never ran into that with a RAID 5 setup. For performance and reliability, I'd go either with the Adaptec 2251800-R or the Adaptec 2220300-R cards. The storage manager is extremely easy to work with and it even does alerting if you have it setup correctly. Ryan -Original Message- From: Jeff Koch [mailto:[EMAIL PROTECTED] Sent: Thursday, September 06, 2007 2:32 PM To: toaster@shupp.org Subject: RE: [toaster] toaster RAID setup Hi Ryan: How do you have the file systems setup on the SATA RAID machine. Do you have the entire toaster on the RAID 5 array? (i.e. the qmail queue as well as the /home/vpopmail/domain directories). Which SATA RAID card are you using and do you have write caching enabled. In our case we're not really looking for a speed increase - mainly just reliability - so we though RAID 1 mirroring would help. At 01:26 PM 9/6/2007, you wrote: I've run a SATA setup in one location for about 3 years now and a SAS setup for about a year now. We've run RAID 5 on both setups and the servers have over 1000 domains each. I've never seen any performance hits on the systems at all. It seems like the only thing that helps performance of either of the systems were the type of CPU's I had. The newer machine with 2 x dual core XEON CPU's seems to process anything you throw at it with no issues at all. The entire toaster install only took 15 minutes on that machine. Ryan -Original Message- From: Jeff Koch [mailto:[EMAIL PROTECTED] Sent: Thursday, September 06, 2007 11:49 AM To: toaster@shupp.org Subject: [toaster] toaster RAID setup Has anyone successfully setup Bill's toaster with SATA RAID? A year or two ago we setup a toaster with a two drive 3ware IDE RAID mirroring setup and the performance was awful. Maybe it was because we didn't have write caching enabled on the RAID controller or should have tweaked the kernel settings. I looked at Bill's proposed setup for an ISP but we're just trying to do this for a single server setup. The only solution we've been able to come up with in the past is to have a single small drive for booting, /var/qmail and /var/logs
[toaster] Need some advice on webmail clients
Hello, I'm looking for some advice about webmail clients. I'm still using sqwebmail because it's very lighter and accesses maildirs directly. Now I'm gonna move to a new server, and I'm looking for a new webmail client for my toaster. With more than 20,000 users accessing daily the webmail, I'm afraid the system gets very slow with a php-based client such Squirrelmail or Imp. Another solution is Openwebmail, a perl webclient that accesses maildirs directly (with a patch). So, what do you recommend ? Horde/Imp, Squirrelmail or should I sacrifice some beauty functions and use sqwebmail or openwebmail instead ? Thanks you for any support :) -- Quer um MacBook de borla ? Habilite-se em http://www.tugamail.com/mac (oferta limitada)
Re: [toaster] toaster RAID setup
Yes we did. On about 5 machines, 2.6.15 to 2.6.22, gentoo everywhere. Roman Jeff Koch napsal(a): Has anyone successfully setup Bill's toaster with SATA RAID? A year or two ago we setup a toaster with a two drive 3ware IDE RAID mirroring setup and the performance was awful. Maybe it was because we didn't have write caching enabled on the RAID controller or should have tweaked the kernel settings. I looked at Bill's proposed setup for an ISP but we're just trying to do this for a single server setup. The only solution we've been able to come up with in the past is to have a single small drive for booting, /var/qmail and /var/logs and run SATA RAID for /home/vpopmail and everything else. But we'd really like to have RAID running for the qmail queue since that's what beats the hell out of a hard disk. Any recommendations or experiences anyone? Best Regards, Jeff Koch
Re: [toaster] Need some advice on webmail clients
On Sep 7, 2007, at 12:14 PM, Jose wrote: Hello, I'm looking for some advice about webmail clients. I'm still using sqwebmail because it's very lighter and accesses maildirs directly. Now I'm gonna move to a new server, and I'm looking for a new webmail client for my toaster. With more than 20,000 users accessing daily the webmail, I'm afraid the system gets very slow with a php-based client such Squirrelmail or Imp. Another solution is Openwebmail, a perl webclient that accesses maildirs directly (with a patch). So, what do you recommend ? Horde/Imp, Squirrelmail or should I sacrifice some beauty functions and use sqwebmail or openwebmail instead ? I doubt you will find better performance than SqWebmail. All IMAP clients pale in comparison. But last time I checked, SqWebmail *still* didn't have a search feature, and some of the HTML is hard coded. Two things that made it less appealing. I've also found it ignores my do not archive settings, and always archives my sent mail. Anyway, IMP is more feature filled, looks very nice, but is a bit sluggish. SquirrelMail has a really easy to use plugin architecture, uses its own imap functions (not the imap extension), so it's more appealing to work with in some regards. That's what I use currently. You might also have a look at RoundCube. Itt uses AJAX nicely to have more of desktop feel to it, and the skin looks like Thunderbird. Looks very promising. But for performance, it's still IMAP and if you have a really really big mailbox like mine, it can be sluggish. Regards, Bill
Re: [toaster] Need some advice on webmail clients
Thanks for the picture Bill. I'll try the Openmail, it's perl, there's a patch to access maildirs directly instead fo imap and pop3 connections, so maybe it's a good alternative to sqwebmail. - Original Message - From: Bill Shupp [EMAIL PROTECTED] To: toaster@shupp.org Sent: Saturday, September 08, 2007 2:12 AM Subject: Re: [toaster] Need some advice on webmail clients On Sep 7, 2007, at 12:14 PM, Jose wrote: -- Quer um MacBook de borla ? Habilite-se em http://www.tugamail.com/mac (oferta limitada)
Re: [toaster] Blackberry integration
--- Bill Shupp [EMAIL PROTECTED] wrote: On Sep 5, 2007, at 10:43 PM, Mark wrote: Hello, Kindly let me know if it is possible to integrate blackberry with the toaster and if yes how to do it. Please treat as urgent. The toaster works with any IMAP/POP client. Thank you for the reply. I think you mean to say ignore the push technology and use the service like a normal mail POP3 client. Regards, Bill Boardwalk for $500? In 2007? Ha! Play Monopoly Here and Now (it's updated for today's economy) at Yahoo! Games. http://get.games.yahoo.com/proddesc?gamekey=monopolyherenow
[toaster] CentOS 5 Error during installation
Dear all, I am trying to setup the toaster using CentOS 5. However when I reach to the compilation of qmail [EMAIL PROTECTED] netqmail-1.05]# make setup check nroff -man qmail-qread.8 qmail-qread.0 /bin/sh: nroff: command not found make: *** [qmail-qread.0] Error 127 please advice. regards Fussy? Opinionated? Impossible to please? Perfect. Join Yahoo!'s user panel and lay it on us. http://surveylink.yahoo.com/gmrs/yahoo_panel_invite.asp?a=7
