Re: [qmailtoaster] qmail-remote/qmail-smtpd and multiple WAN IP addresses on same box
Thanks Dan, Thanks for confirming what would occur with outbound mail. However, what about inbound mail, whereby one connection handles mail for mx mail1..com and another for mail2..com? Will tcpserver/qmail-smtpd open whatever connections it needs there as well?: vpopmail 2706 0.0 0.0 3824 416 ?SJul01 0:00 /usr/bin/tcpserver -v -R -H -l mail.dmsystems.com -x /etc/tcprules.d/tcp.smtp.cdb -c 100 -u 89 -g 89 0 587 /var/qmail/bin/qmail-smtpd /home/vpopmail/bin/vchkpw /bin/true tcp0 0 xx.xxx.xxx.xxx:25 74.84.128.73:47345 ESTABLISHED tcp0 0 xx.xxx.xxx.xxx:25 69.199.67.164:4478 TIME_WAIT Obviously it opens multiple listening connections on the same single IP as indicated above. Thanks, Tim On Thu, July 14, 2011 11:20 am, Dan McAllister wrote: > Tim, > > I think your problem is different from what you've read on the other > forums... specifically, I suspect that they wanted to have the system > attached to both IP addresses (both ISPs), but have QMail use only > one THAT requires a patch. > > What you're proposing is that you have 2 IP addresses (whether on a pair > (or more) of NICs, or shared on one NIC won't matter) and that you let > whatever internal load balancing is in effect control the outbound > message flow. This is the DEFAULT behavior of QMail, so no patches are > necessary. > > One brief caveat -- if you're using SPF, make sure BOTH of your public > IP addresses are valid -- and make sure BOTH of your public IP addresses > have appropriate reverse-DNS entries. > > Good Luck! > > Dan > IT4SOHO > > On 7/14/2011 11:31 AM, Tim Pleiman wrote: >> I'm in the process of upgrading a system with load balacing/failover >> from >> 2 different ISPs on a single box, e.g.: >> >> http://www.xenocafe.com/tutorials/linux/redhat/bind_multiple_ip_addresses_to_single_nic/index.php >> >> What I wish to be able to do is have qmail-smtpd listening on both IP >> addresses for inbound mail traffic at all times. Then have qmail-remote >> select the first available address to send outbound traffic--e.g. either >> IP that is available, so that if one goes down, qmail-remote will >> automatically determine to send on the other. >> >> Is this possible with the current qmailtoaster distribution? I've seen >> posts in other forums with similar questions, some indicate that a patch >> is required or to have the services bound to specific IPs. None of the >> information I can find gives information specific as to what I'm trying >> to >> accomplish. >> >> Many thanks in advance! >> >> Tim > > - > Qmailtoaster is sponsored by Vickers Consulting Group > (www.vickersconsulting.com) > Vickers Consulting Group offers Qmailtoaster support and > installations. > If you need professional help with your setup, contact them today! > - > Please visit qmailtoaster.com for the latest news, updates, and > packages. > > To unsubscribe, e-mail: > qmailtoaster-list-unsubscr...@qmailtoaster.com > For additional commands, e-mail: > qmailtoaster-list-h...@qmailtoaster.com > > > -- Tim Pleiman Bravo Systems Technologies "Advanced Open Source Solutions for Business" Chicago, IL USA - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! - Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
Re: [qmailtoaster] qmail-remote/qmail-smtpd and multiple WAN IP addresses on same box
Tim, I think your problem is different from what you've read on the other forums... specifically, I suspect that they wanted to have the system attached to both IP addresses (both ISPs), but have QMail use only one THAT requires a patch. What you're proposing is that you have 2 IP addresses (whether on a pair (or more) of NICs, or shared on one NIC won't matter) and that you let whatever internal load balancing is in effect control the outbound message flow. This is the DEFAULT behavior of QMail, so no patches are necessary. One brief caveat -- if you're using SPF, make sure BOTH of your public IP addresses are valid -- and make sure BOTH of your public IP addresses have appropriate reverse-DNS entries. Good Luck! Dan IT4SOHO On 7/14/2011 11:31 AM, Tim Pleiman wrote: I'm in the process of upgrading a system with load balacing/failover from 2 different ISPs on a single box, e.g.: http://www.xenocafe.com/tutorials/linux/redhat/bind_multiple_ip_addresses_to_single_nic/index.php What I wish to be able to do is have qmail-smtpd listening on both IP addresses for inbound mail traffic at all times. Then have qmail-remote select the first available address to send outbound traffic--e.g. either IP that is available, so that if one goes down, qmail-remote will automatically determine to send on the other. Is this possible with the current qmailtoaster distribution? I've seen posts in other forums with similar questions, some indicate that a patch is required or to have the services bound to specific IPs. None of the information I can find gives information specific as to what I'm trying to accomplish. Many thanks in advance! Tim - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! - Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
[qmailtoaster] qmail-remote/qmail-smtpd and multiple WAN IP addresses on same box
I'm in the process of upgrading a system with load balacing/failover from 2 different ISPs on a single box, e.g.: http://www.xenocafe.com/tutorials/linux/redhat/bind_multiple_ip_addresses_to_single_nic/index.php What I wish to be able to do is have qmail-smtpd listening on both IP addresses for inbound mail traffic at all times. Then have qmail-remote select the first available address to send outbound traffic--e.g. either IP that is available, so that if one goes down, qmail-remote will automatically determine to send on the other. Is this possible with the current qmailtoaster distribution? I've seen posts in other forums with similar questions, some indicate that a patch is required or to have the services bound to specific IPs. None of the information I can find gives information specific as to what I'm trying to accomplish. Many thanks in advance! Tim -- Tim Pleiman Bravo Systems Technologies "Advanced Open Source Solutions for Business" Chicago, IL USA - Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! - Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com
