Hi folks, I have 6 dumUs on Xen running Debian Etch including dum0. Their hostnames are; dum0 - xen0.satimis.com dumU1 - xen1.satimis.com dumU2 - xen2.satimis.com dumU3 - xen3.satimis.com IP - 192.168.0.113 etc. xen3.satimis.com is a mail server. It can send mails but unable receive mails because Internet can''t find its address. Port 25 has been forwarded to its IP already. Is there any way solving the problem instead of renaming its hostname as satimis.com? Please advise. TIA B.R. Stephen L Send instant messages to your online friends http://uk.messenger.yahoo.com _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Stephen, First, a nitpick - it''s DomU and Dom0. You need to add a DNS entry on the DNS server for Satimis.com. According to the whois for that domain, you''d be logging into your GoDaddy account to do that. There are two records you want to add. One is a MX record for satimis.com pointing at xen3.satimis.com (or the public IP address), and one is an A record for xen3.satimis.com that is your public IP. If you have further issues, let me know off-list. Thank you, Nathan Eisenberg Sr. Systems Administrator Atlas Networks, LLC. -----Original Message----- From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Stephen Liu Sent: Thursday, October 02, 2008 7:00 AM To: xen-users@lists.xensource.com Subject: [Xen-users] dumU unable receiving mails Hi folks, I have 6 dumUs on Xen running Debian Etch including dum0. Their hostnames are; dum0 - xen0.satimis.com dumU1 - xen1.satimis.com dumU2 - xen2.satimis.com dumU3 - xen3.satimis.com IP - 192.168.0.113 etc. xen3.satimis.com is a mail server. It can send mails but unable receive mails because Internet can''t find its address. Port 25 has been forwarded to its IP already. Is there any way solving the problem instead of renaming its hostname as satimis.com? Please advise. TIA B.R. Stephen L Send instant messages to your online friends http://uk.messenger.yahoo.com _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
>Port 25 has been forwarded to its IP already.Port 25 of what "External IP", your MX record for satimis.com? It looks like you have 3 mx records, does the highest priority resolve to the forwarded IP of your xen server? Where do the other two go? What MTA are you using? Does it know its being nat''ed?>Is there any way solving the problemYes, but we need much more info...>instead of renaming its hostname as satimis.com?Most MTA''s allow you to change the banner for this reason. jlc _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Joseph, --- "Joseph L. Casale" <JCasale@activenetwerx.com> wrote:> >Port 25 has been forwarded to its IP already. > > Port 25 of what "External IP", your MX record for satimis.com?Port 25 of "External IP" forward to local IP of xen3.satimis.com> It looks like you have 3 mx records, does the highest priority > resolve to the forwarded IP of your xen server? Where do the other > two go?Sorry I don''t follow. Please explain in more detail. Thanks.> What MTA are you using? Does it know its being nat''ed?Postfix and dovecot. Where I have to check? Others noted with thanks B.R. Stephen L Send instant messages to your online friends http://uk.messenger.yahoo.com _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Stephen, Right now, these are your MX records for satimis.com: 10 mail.satimis.com 220.232.213.178 3600 20 smtp.secureserver.net 208.109.80.149 3600 30 mailstore1.secureserver.net 64.202.166.11 3600 If mail.satimis.com doesn''t resolve to the "External IP" which is forwarded to xen3, mail will not be delivered. To fix this, as I said, you need an A record for xen3 that resolves to "External IP", and an MX record for "satimis.com" with priority of <10 which points delivery to that A record. This can be done from your GoDaddy control panel. To use an analogy, what you have done is essentially built a mail slot in your front door - now you must instruct the post office to use that mail slot instead of the mailbox outside. Thank you, Nathan Eisenberg Sr. Systems Administrator Atlas Networks, LLC -----Original Message----- From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Stephen Liu Sent: Thursday, October 02, 2008 7:28 AM To: xen-users@lists.xensource.com Subject: RE: [Xen-users] dumU unable receiving mails Hi Joseph, --- "Joseph L. Casale" <JCasale@activenetwerx.com> wrote:> >Port 25 has been forwarded to its IP already. > > Port 25 of what "External IP", your MX record for satimis.com?Port 25 of "External IP" forward to local IP of xen3.satimis.com> It looks like you have 3 mx records, does the highest priority > resolve to the forwarded IP of your xen server? Where do the other > two go?Sorry I don''t follow. Please explain in more detail. Thanks.> What MTA are you using? Does it know its being nat''ed?Postfix and dovecot. Where I have to check? Others noted with thanks B.R. Stephen L Send instant messages to your online friends http://uk.messenger.yahoo.com _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
>Port 25 of "External IP" forward to local IP of xen3.satimis.com<VBG>, I wanted to know what the actual IP is, you stated "its" forwarded. What is it?>> It looks like you have 3 mx records, does the highest priority >> resolve to the forwarded IP of your xen server? Where do the other >> two go? > >Sorry I don''t follow. Please explain in more detail. Thanks.Well, your DNS records show 3 smtp servers designated to receive for your domain. I don''t know your topology, and this can be fairly involved. Lets make sure your xen3 instance has the one with highest priority (10) MX preference = 10, mail exchanger = mail.satimis.com MX preference = 20, mail exchanger = smtp.secureserver.net MX preference = 30, mail exchanger = mailstore1.secureserver.net Now what is the external IP on your xen server, I hope for now it is 220.232.213.178?>> What MTA are you using? Does it know its being nat''ed? > >Postfix and dovecot. Where I have to check?Ok, to start you need to spend time here: http://www.postfix.com :) Proxy info: http://www.postfix.com/postconf.5.html#proxy_interfaces Banner info: http://www.postfix.com/postconf.5.html#myhostname There are many more factors here. How do the other two smtp servers route mail back to your primary, or can all of them reach your mailbox server? Lots to figure out... Join postfix users, MANY bright people on that list. jlc _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Joseph, --- "Joseph L. Casale" <JCasale@activenetwerx.com> wrote:> >Port 25 of "External IP" forward to local IP of xen3.satimis.com > > <VBG>, I wanted to know what the actual IP is, you stated "its" > forwarded. > What is it?220.232.213.178> >> It looks like you have 3 mx records, does the highest priority > >> resolve to the forwarded IP of your xen server? Where do the other > >> two go? > > > >Sorry I don''t follow. Please explain in more detail. Thanks. > > Well, your DNS records show 3 smtp servers designated to receive > for your domain. I don''t know your topology, and this can be fairly > involved. Lets make sure your xen3 instance has the one with highest > priority (10) > > MX preference = 10, mail exchanger = mail.satimis.com > MX preference = 20, mail exchanger = smtp.secureserver.net > MX preference = 30, mail exchanger = mailstore1.secureserver.netmail.satimis.com was the hostname of another mail server which was also run for testing. It is not running now.> Now what is the external IP on your xen server, I hope for now it > is 220.232.213.178? > > >> What MTA are you using? Does it know its being nat''ed? > > > >Postfix and dovecot. Where I have to check? > > Ok, to start you need to spend time here: http://www.postfix.com :) > > Proxy info: > http://www.postfix.com/postconf.5.html#proxy_interfaces > Banner info: > http://www.postfix.com/postconf.5.html#myhostname > > There are many more factors here. How do the other two smtp servers > route mail back to your primary, or can all of them reach your > mailbox > server? Lots to figure out... Join postfix users, MANY bright people > on that list.Noted with thanks B.R. Stephen L Send instant messages to your online friends http://uk.messenger.yahoo.com _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
>220.232.213.178Good, that matches your priority 10 mx record. You need to research into how the other two now deliver mail to your mailbox server. Lots of possibilities based on your topology, best to pick the rest of this up in postfix/dovecot user lists. Good luck! jlc _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users