I tried to set the SmartDNSHost option in Server.tab, but it still does not work.
Which external DNS could I use? Regards, Gustavo ----- Original Message ----- From: "Tracy" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Wednesday, December 17, 2003 11:06 AM Subject: [xmail] Re: Can't send any mail using XMail in Linux > If you successfully connected to the machine using telnet from the mail > server, then the mail server should be able to do the same. > You said that you have port 53 blocked. You also said that you are not > using SmartDNS (if I recall correctly). So, how are you doing DNS lookups? > > I could be wrong here, but what I'm about to say matches my own experience > - Xmail uses external DNS (such as the root DNS servers) to find MX records > for remote systems. So, for example, if Xmail wanted to find the MX record > for uol.com.br, it might: > > 1) Do a query to the ROOT servers for the authoritative DNS server that > serves uol.com.br > 2) Do a query to the authoritative DNS server for uol.com.br's MX record > > Setting up the SmartDns option in server.tab causes Xmail to use a specific > (set of) DNS server(s) to perform these queries. > > So, if you have no access to port 53 (UDP and TCP) from the mail server, > you need to establish the SmartDns option in server.tab. > > And if I'm wrong here, somebody beat me with a cluestick, OK? > > At 07:44 12/17/2003, Gustavo Pereira - Loyer wrote: > > >Leonardo, > > > > I successfully made a telnet into mx.uol.com.br 25, and work exactly how > >you said. The DNS is working fine, because I can make a telnet on port 25 > >for other mail servers too. > > > > I think the problem is that uol.com.br and other servers made some kind > >of verification/authentication that I'm not aware of. > > > >Regards, > > > >Gustavo > > > > > > > >----- Original Message ----- > >From: "Leonardo Cabral" <[EMAIL PROTECTED]> > >To: <[EMAIL PROTECTED]> > >Sent: Wednesday, December 17, 2003 10:25 AM > >Subject: [xmail] Re: Can't send any mail using XMail in Linux > > > > > > > Gustavo Pereira - Loyer <[EMAIL PROTECTED]> wrote: > > > > Davide, > > > > > > > > The XMail machine only respond requsets in ports 25 and 80 TCP. > > > > All other ports are blocked by the firewall. Why is the port 53 used > > > > for? > > > > > > > That's ok, the question was if your machine has DNS resolution enabled (by > >a > > > firewall). But you already said that yes, in a previous mail. > > > >I can ping uol.com.br from mail server, and I'm not using SmartDNSHost > > > option is Server.tab. > > > > > > So, I suggest you to try to do a telnet to an outside smtp server and > > > see if you have outbound access to deliver mail. Log into your server as > > > root and type: > > > telnet mx.uol.com.br 25 > > > And see if you get something like: > > > Trying 200.221.11.51... > > > Connected to mx.uol.com.br. > > > Escape character is '^]'. > > > 220 storm16.uol.com.br ESMTP > > > > > > If you don't, send the error here and that may help. > > > Regards, > > > > > > Leonardo > > > > > > - > > > To unsubscribe from this list: send the line "unsubscribe xmail" in > > > the body of a message to [EMAIL PROTECTED] > > > For general help: send the line "help" in the body of a message to > > > [EMAIL PROTECTED] > > > > > > > > > >- > >To unsubscribe from this list: send the line "unsubscribe xmail" in > >the body of a message to [EMAIL PROTECTED] > >For general help: send the line "help" in the body of a message to > >[EMAIL PROTECTED] > > > - > To unsubscribe from this list: send the line "unsubscribe xmail" in > the body of a message to [EMAIL PROTECTED] > For general help: send the line "help" in the body of a message to > [EMAIL PROTECTED] > > - To unsubscribe from this list: send the line "unsubscribe xmail" in the body of a message to [EMAIL PROTECTED] For general help: send the line "help" in the body of a message to [EMAIL PROTECTED]
