Hi Davide,
I found a strange behavior in Xmail for local delivery due to a DNS problem. Let me describe first the installation. -1- Xmail 1.26 configuration and binaries duplicated from a running platform directly exposed on internet -2- This duplicated Xmail has been installed on DMZ (behind a firewall + NAT) : 192.168.1.100 -3- On firewall : transparent translation of port 110 and 25 to Xmail I had the following problems: - Not all mails were going out (some of them being always in retry), others going out. - 2 hours for delivery of received mails (even mails sent from local account to another local account) Strange behavior: -1- If I Stop and Start Xmail, all mails in the spool are finally delivered immediately to mailboxes (but still problem when sending) -2- after that, again 2 hours minimum for delivery (I can see mails in the spool.) -3- If I Stop and Start again Xmail, all mails in the spool are delivered immediately to mailboxes (but still problem when sending) => I can't do that every 3 minutes :( and btw still mails that are in retry mode, then after a while, in frozen state. After spending time on Xmail queue (thanks to Xmail Queue Manager: GREAT) and looking in the log, I found that Xmail had DNS problems. I don't know why because the server is resolving Names with no problem. (dns1 : 192.168.1.20 ; dns2 : 83.144.0.10) Googleing my errors, I found things about DNS recursion (my DNS server 192.168.1.20 was already accepting recursion.) What I did is: uncomment SmartDNSHost and put : "SmartDNSHost" " 192.168.1.20:tcp" Then, all the message that were not going out started finally to go out and immediately the received mails were delivered. - Question 1: Why do I need SmartDNSHost ?? In my case, The server running Xmail has already DNS servers entries in its TCP/IP configuration - Question 2: I think there is no link between local delivery and outgoing mails, no ? Why Xmail is not delivering immediately received mails, even if Xmail is having problems to send mails due to DNS resolution ?? On a other network (with DMZ, Firewall, Nat), I have done the same test (Xmail V 1.25) and reproduce this behavior that is solved immediately with SmartDNSHost No help/solution needed, I just want to understand. Hope I'm clear enough, Best, Emmanuel Gonzalez
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