Re: MX, ETRN and QMAIL
On Tue, Jan 18, 2000 at 04:51:49AM +0100, J.M. Roth iip" wrote: Hi there. I have 3 MXs for a domain. The lowest preference MX is the local server. The other 2 are the customer's internal server as well as an SMTP queueing machine (ETRN etc.). The local machine is there in case the customer's server and the mail queue fails. If I send mail using the local server (outgoing mail server) it doesn't even go to the higher preference MX servers but simply delivers locally, instead to the highest preference MX, that is the customer's server or its queue. The domain is listed in rcpthosts and virtualdomains. Take it out of virtualdomains. By putting it there you're telling qmail to handle that domain locally, which isn't what you want. List it in rcpthosts only. Chris
Re: MX, ETRN and QMAIL
Ok, a few things. I know, lower priority = higher number. When I said lower priority I meant exactly that. f.e.: in MX 5 mail.customer.com in MX 10 queue.server.com in MX 20 ourbackup.ourdomain.com in case MX5 and MX10 fail it should go to the appropriate account on MX20. to Chris: taking it out of virtualhosts simply prevents it from ending up in the right mailbox (has this to do something with DNS lookups?) to Marc-Adrian: if I delete the domain out of rcpthosts the MX20 won't receive anything for that domain to David: thanks, I'm going to check out the smtproutes thing SO: Any idea? Is smtproutes the right thing to do? Best regards! -- jmr - Original Message - From: Chris Johnson [EMAIL PROTECTED] To: J.M. Roth iip" [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Tuesday, January 18, 2000 11:12 AM Subject: Re: MX, ETRN and QMAIL
Re: MX, ETRN and QMAIL
Ok, sorry I meant virtualdomains. As I said I would like a backup in case example.com AND the queue for it fail. This I've done with the MX records. One disadvantage is, since the domain must be in rcpthosts on the 3rd machine to receive anything, *if* mail is sent using this machine as outgoing mail server, it doesn't even get sent to example.com, even though it's higher preference... Got it? -- jmr - Original Message - From: "Chris Johnson" [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Tuesday, January 18, 2000 8:22 PM Subject: Re: MX, ETRN and QMAIL On Tue, Jan 18, 2000 at 06:56:25PM +, [EMAIL PROTECTED] wrote: Yeah, but why not in virtualhosts. How can I distinguish between several mailboxes then on the backup machine?? For one thing, there's no such thing as virtualhosts. Let's say the domain is example.com. You want queue.server.com to accept mail for example.com, but you just want it to queue it and deliver it to mail.customer.com when that machine is available. Is that correct? Then, on queue.server.com, put example.com in rcpsthosts and nowhere else. That's *all* you have to do. Chris
Re: MX, ETRN and QMAIL
On Tue, Jan 18, 2000 at 08:43:57PM +0100, J.M. Roth iip" wrote: Ok, sorry I meant virtualdomains. As I said I would like a backup in case example.com AND the queue for it fail. This I've done with the MX records. One disadvantage is, since the domain must be in rcpthosts on the 3rd machine to receive anything, *if* mail is sent using this machine as outgoing mail server, it doesn't even get sent to example.com, even though it's higher preference... Got it? No. This is just not the case. rcpthosts only affects *incoming SMTP* mail, and it has no affect whatsoever on where mail is ultimately delivered. It only determines whether your SMTP server will accept the message at the SMTP "RCPT TO" command. It will *not* cause a lower-preference mail exchanger to ignore better-preference ones. Set up the best-preference mail exchanger normally (with the domain in rcpthosts and either locals or virtualdomains). On the non-best-preference mail exchangers, put the domain on rcpthosts only. This is how it's done. Chris
Re: MX, ETRN and QMAIL
Ok, I understand. Didn't have anything like this before. Never mind. But how can I determine then where exactly the mail is delivered in case it arrives on the lower-preference one, if I can't use virtualdomains or whatever... Thanks again Best regards -- jmr - Original Message - From: "Chris Johnson" [EMAIL PROTECTED] To: "J.M. Roth iip"" [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Sent: Tuesday, January 18, 2000 9:52 PM Subject: Re: MX, ETRN and QMAIL On Tue, Jan 18, 2000 at 08:43:57PM +0100, J.M. Roth iip" wrote: Ok, sorry I meant virtualdomains. As I said I would like a backup in case example.com AND the queue for it fail. This I've done with the MX records. One disadvantage is, since the domain must be in rcpthosts on the 3rd machine to receive anything, *if* mail is sent using this machine as outgoing mail server, it doesn't even get sent to example.com, even though it's higher preference... Got it? No. This is just not the case. rcpthosts only affects *incoming SMTP* mail, and it has no affect whatsoever on where mail is ultimately delivered. It only determines whether your SMTP server will accept the message at the SMTP "RCPT TO" command. It will *not* cause a lower-preference mail exchanger to ignore better-preference ones. Set up the best-preference mail exchanger normally (with the domain in rcpthosts and either locals or virtualdomains). On the non-best-preference mail exchangers, put the domain on rcpthosts only. This is how it's done. Chris
MX, ETRN and QMAIL
Hi there. I have 3 MXs for a domain. The lowest preference MX is the local server. The other 2 are the customer's internal server as well as an SMTP queueing machine (ETRN etc.). The local machine is there in case the customer's server and the mail queue fails. If I send mailusingthe local server (outgoing mail server) it doesn't even go to the higher preference MX servers but simply delivers locally, instead to the highest preference MX, that is the customer's server or its queue. The domain is listed in rcpthosts and virtualdomains. Any idea? If I omitted some details, please don't hesitate to ask. J.M. Roth
Re: MX, ETRN and QMAIL
The host receiveing your message isn't looking up in DNS for that MX record because it's config say's it's allowed to handle the message itself. Configuring the domain in /var/qmail/control/smtproutes might help, but then if the other two servers go down the messages will just sit in the local hosts queue until they expire or one of the hosts come up. Also are you aware that a lower number for an MX record means a higher preference. Regards David Anso Network Administrator (daveland.co.nz) Email: [EMAIL PROTECTED] - Original Message - From: J.M. Roth (iip) To: [EMAIL PROTECTED] Sent: Tuesday, January 18, 2000 4:51 PM Subject: MX, ETRN and QMAIL Hi there. I have 3 MXs for a domain. The lowest preference MX is the local server. The other 2 are the customer's internal server as well as an SMTP queueing machine (ETRN etc.). The local machine is there in case the customer's server and the mail queue fails. If I send mail using the local server (outgoing mail server) it doesn't even go to the higher preference MX servers but simply delivers locally, instead to the highest preference MX, that is the customer's server or its queue. The domain is listed in rcpthosts and virtualdomains. Any idea? If I omitted some details, please don't hesitate to ask. J.M. Roth
Re: MX, ETRN and QMAIL
Hi All, The host receiveing your message isn't looking up in DNS for that MX record because it's config say's it's allowed to handle the message itself. Configuring the domain in /var/qmail/control/smtproutes might help, but then if the other two servers go down the messages will just sit in the local hosts queue until they expire or one of the hosts come up. Also are you aware that a lower number for an MX record means a higher preference. Even if qmail is configured to handle mail for a domain (through rcpthosts) it should do the lookup on the MX for that domain right? I've had situations where we are the second priority mail server for a domain , and sending mail from our mail server to their domain doesn't go to their server but to the local machine because we have that domain in rcpthosts. Once i've taken the domain out of rcpthosts file it goes to the first priority mail server not a problem. This seems to be intimittent, so i must be missing something here. Anyone? Regards, Marc-Adrian Napoli Connect Infobahn Australia +61 2 92811750
