So it does not matter what domain the reverse points to? As if I ran multiple domains from one IP address?
I do run my own DNS server but I cant get intouch with the person that deals with the DNS where my servers are located. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of John Kielkopf Sent: Thursday, December 12, 2002 5:03 PM To: [EMAIL PROTECTED] Subject: [xmail] Re: More questions on SMTP-RDNSCheck If you run DNS on your own box you can have a classless reverse lookup zone delegated to your server by your ISP or bandwidth provider. (see: http://www.dns.net/dnsrd/rfc/rfc2317.html for more info.) If your ISP is not willing to do this (some just don't know how, or don't know it's possible), then you can ask them to create the pointer record on their DNS server. I've run into many servers that will reject mail if your SMTP server's IP address doesn't have a valid pointer record. Just as your domain should have at least one valid MX record, you also need to make sure the IP address your SMTP server uses has a valid pointer record. ----- Original Message ----- From: "Andrew Joakimsen" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, December 12, 2002 3:14 PM Subject: [xmail] Re: More questions on SMTP-RDNSCheck > > But requiring that an IP have a reverse dns, would this be based on the > MX record for the sending domain? Then how can an IP have multiple > reverse DNS? Also I've been wating almost two months for the "dns guy" > where I colo my servers to get back to you. If anyone really checked for > reverse dns I'd be in trouble because I cant even get someone to setup > the reverse dns, my ip block is only 24 addresses that have been > reassigned to me so I CANT setup the reverse dns anyways. > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] > On Behalf Of John Kielkopf > Sent: Thursday, December 12, 2002 1:20 PM > To: [EMAIL PROTECTED] > Subject: [xmail] More questions on SMTP-RDNSCheck > > > I keep giving SMTP-RDNSCheck a shot on every new version of Xmail, on > one of > our low use servers, but it still seems a bit off. > > How does it react when the DNS server in charge of that PTR record is > down? > It seems as if it refuses the mail with a permanent error instead of > trying > to resolve a few more times and then returning a temporary error. > > And I'll ask yet again; isn't the error response "Server access > forbidden by > your IP" a bit cryptic? One of the reasons for implementing such a > check is > to try to get other mail servers to fix such problems, but you need to > give > the user a little more to go on, so they can relay an educated complaint > to > their system admins... If the error message can't be changed, would it > be, > or is it already, possible to have macros (like @@FROM in MAILPROC.TAB) > in > CustomSMTPMessage so I can pass the error response and IP address of the > offending SMTP server in a querystring to my error description page, > allowing me to help the user a bit more in telling them how to get their > problem fixed w/o taking a call? Like "Please open > http://www.myserver.com/errors.pl?smtpip=@@SMTPIP&error=@@ERROR to get > more > information about this error" > > Well, for now SMTP-RDNSCheck stays off. Too much legitimate mail is > refused, and way too many support calls asking what "Server access > forbidden > by your IP" means... most think they are on a ban list. > > Thanks, > -John > > > - > 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]
