The only addresses that I see that need this are root, postmaster and abuse. All others do not need it. John Tolmachoff MCSE CSSA Engineer/Consultant eServices For You www.eservicesforyou.com > -----Original Message----- > From: Mulnick, Al [mailto:Al.Mulnick@xxxxxxxxxx] > Sent: Monday, September 15, 2003 2:13 PM > To: [ExchangeList] > Subject: [exchangelist] RE: address with brackets > > http://www.MSExchange.org/ > > John, I can understand that a spam relay check checking for a host on the ip > block and sending. But what's that got to do with hosting an addr of > user@[....] ?? That doesn't translate to anything that I can see. Can you > elaborate that point? > > Al > > -----Original Message----- > From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx] > Sent: Monday, September 15, 2003 5:12 PM > To: [ExchangeList] > Subject: [exchangelist] RE: address with brackets > > > http://www.MSExchange.org/ > > Many spam relay checks operate on the IP level, not on DNS. > > http://postmaster.info.aol.com/opse.html > > > John Tolmachoff MCSE CSSA > Engineer/Consultant > eServices For You > www.eservicesforyou.com > > > > -----Original Message----- > > From: Mulnick, Al [mailto:Al.Mulnick@xxxxxxxxxx] > > Sent: Monday, September 15, 2003 1:49 PM > > To: [ExchangeList] > > Subject: [exchangelist] RE: address with brackets > > > > http://www.MSExchange.org/ > > > > John, are you saying that the value is just the way that AOL runs it's > > diagnostics? If so, I see your point, but think that test is a low > > level test that only shows that DNS is misconfigured/not operational. > > I still can't see the value in the context of the RFC for the majority > > of users. > I > > certainly can't see the value in the context of mail abuse since > > without > DNS > > service, you have the proverbial chicken and egg problem: without DNS > > service, you can't find the ip address; mail flow only requires (for > > most mailers that follow the concept) an A RR to deliver mail. > > > > Thanks for pointing out AOL's troubleshooting methods as one possible > reason > > to keep that address. > > > > Al > > > > -----Original Message----- > > From: John Tolmachoff (Lists) [mailto:johnlist@xxxxxxxxxxxxxxxxxxx] > > Sent: Monday, September 15, 2003 4:36 PM > > To: [ExchangeList] > > Subject: [exchangelist] RE: address with brackets > > > > > > http://www.MSExchange.org/ > > > > If you have any problems with AOL, and they do some tests, those are > > sent > to > > postmaster@[xxx.xxx.xxx.xxx] > > > > John Tolmachoff MCSE CSSA > > Engineer/Consultant > > eServices For You > > www.eservicesforyou.com > > > > > > > -----Original Message----- > > > From: Mulnick, Al [mailto:Al.Mulnick@xxxxxxxxxx] > > > Sent: Monday, September 15, 2003 1:15 PM > > > To: [ExchangeList] > > > Subject: [exchangelist] RE: address with brackets > > > > > > http://www.MSExchange.org/ > > > > > > I've read that as well, but I still don't see the value of the > > > domain-literal addressing sequence and this doesn't help to explain > > > it. > > > >From that RFC (which, as far as I'm concerned is really ineffectual > > > >since > > > many hosts are still only RFC 821/822 compliant and don't know of > > 2821/2822 > > > comments yet): > > > > > > > > > 4.1.3 Address Literals > > > > > > Sometimes a host is not known to the domain name system and > > > communication (and, in particular, communication to report and repair > > > the error) is blocked. To bypass this barrier a special literal form > > > of the address is allowed as an alternative to a domain name. For > > > IPv4 addresses, this form uses four small decimal integers separated > > > by dots and enclosed by brackets such as [123.255.37.2], which > > > indicates an (IPv4) Internet Address in sequence-of-octets form. For > > > IPv6 and other forms of addressing that might eventually be > > > standardized, the form consists of a standardized "tag" that > > > identifies the address syntax, a colon, and the address itself, in a > > > format specified as part of the IPv6 standards [17]. > > > > > > Specifically: > > > > > > IPv4-address-literal = Snum 3("." Snum) > > > IPv6-address-literal = "IPv6:" IPv6-addr > > > General-address-literal = Standardized-tag ":" 1*dcontent > > > Standardized-tag = Ldh-str > > > ; MUST be specified in a standards-track RFC > > > ; and registered with IANA > > > > > > Snum = 1*3DIGIT ; representing a decimal integer > > > ; value in the range 0 through 255 > > > Let-dig = ALPHA / DIGIT > > > Ldh-str = *( ALPHA / DIGIT / "-" ) Let-dig > > > > > > IPv6-addr = IPv6-full / IPv6-comp / IPv6v4-full / IPv6v4-comp > > > IPv6-hex = 1*4HEXDIG > > > IPv6-full = IPv6-hex 7(":" IPv6-hex) > > > IPv6-comp = [IPv6-hex *5(":" IPv6-hex)] "::" [IPv6-hex *5(":" > > > IPv6-hex)] > > > ; The "::" represents at least 2 16-bit groups of zeros > > > ; No more than 6 groups in addition to the "::" may be > > > ; present > > > IPv6v4-full = IPv6-hex 5(":" IPv6-hex) ":" IPv4-address-literal > > > IPv6v4-comp = [IPv6-hex *3(":" IPv6-hex)] "::" > > > > > > [IPv6-hex *3(":" IPv6-hex) ":"] IPv4-address-literal > > > ; The "::" represents at least 2 16-bit groups of zeros > > > ; No more than 4 groups in addition to the "::" and > > > ; IPv4-address-literal may be present > > > > > > In theory, this sounds great and everybody should go away happy. In > > > practice, if I have the IP address, where'd it come from? If I have > > > an A > > RR > > > why can't I route to the domain that way? How do I scale that with > > mulitple > > > mail hosts? > > > > > > I suppose I can answer my question by putting a link on my web page > > > for abuse such as abuse@[....] but that begs the question of how > > > people get to my web page without my DNS? It starts to become > > > circular logic after a brief amount of thought. About the only > > > place I could put this address would be on my WHOIS records, and > > > that can be hacked (and has) and often isn't up to date anyway. Why > > > bother? I don't see the value. > > > > > > I'd love it if somebody can point out the value and useful > > > implementations of such an address. 'Till then I'll continue to > > > believe this is wrong and the world is flat ;) > > > > > > > > > Al > > > > > > > > > > > > -----Original Message----- > > > From: Mark Fugatt [mailto:mark@xxxxxxxxx] > > > Sent: Monday, September 15, 2003 2:57 PM > > > To: [ExchangeList] > > > Subject: [exchangelist] RE: address with brackets > > > > > > > > > http://www.MSExchange.org/ > > > > > > I would recommend taking a look at this RFC: > > > http://www.faqs.org/rfcs/rfc2821.html > > > > > > > > > Mark Fugatt > > > MCT, MCSE, Microsoft Exchange MVP > > > Pentech Office Solutions Inc > > > Tel: 585 586 3890 > > > Cell: 585 576 4750 > > > Fax: 585 249 0316 > > > www.4mcts.com > > > www.exchangetrainer.com > > > > > > > > > > > > -----Original Message----- > > > From: Mulnick, Al [mailto:Al.Mulnick@xxxxxxxxxx] > > > Sent: Monday, September 15, 2003 12:06 PM > > > To: [ExchangeList] > > > > > > http://www.MSExchange.org/ > > > > > > I'm starting to wonder if I'm reading the same RFC :) > > > > > > I see this part of the RFC : > > > > > > 6.2.3. DOMAIN TERMS > > > > > > A domain-ref must be THE official name of a registry, network, > > > or host. It is a symbolic reference, within a name sub- > > > domain. At times, it is necessary to bypass standard mechan- > > > isms for resolving such references, using more primitive > > > information, such as a network host address rather than its > > > associated host name. > > > > > > To permit such references, this standard provides the domain- > > > literal construct. Its contents must conform with the needs > > > of the sub-domain in which it is interpreted. > > > > > > Domain-literals which refer to domains within the ARPA Inter- > > > net specify 32-bit Internet addresses, in four 8-bit fields > > > noted in decimal, as described in Request for Comments #820, > > > "Assigned Numbers." For example: > > > > > > [10.0.3.19] > > > > > > Note: THE USE OF DOMAIN-LITERALS IS STRONGLY > DISCOURAGED. > > It > > > is permitted only as a means of bypassing temporary > > > system limitations, such as name tables which are not > > > complete. > > > > > > The names of "top-level" domains, and the names of domains > > > under in the ARPA Internet, are registered with the Network > > > Information Center, SRI International, Menlo Park, > > > California. > > > > > > > > > > > > And especially notice the NOTE section which strongly discourages > > > the use > > of > > > domain literals. I have to question the use of that by any > > > blacklist/blocklist/blockhead that says you have to have one of > > > those, especially since that concept doesn't really scale well, does > > > it? > > Multiple > > > MX records are needed and if DNS is inoperable, then I suppose that > > reverse > > > DNS checks would also be broken, right? > > > > > > I'm not trying to rant about this, but it makes no sense!! What is > > > the value of a domain-literal/implicitly defined FQDN for host > > > delivery? > > Better > > > yet, is that not a bigger problem to specify such a thing with > > > little return? I'd have to give away half the addresses (which > > > arguably should > > be > > > public, but the situation is if DNS is down). I think that the > > > further > > use > > > of the RFC which says that you should be able to fall back to trying > > > an A > > RR > > > for a domain is a far better use of the system than is > > > domain-literal acceptance. > > > > > > > > > Al > > > > > > -----Original Message----- > > > From: Mark Fugatt [mailto:mark@xxxxxxxxx] > > > Sent: Monday, September 15, 2003 10:27 AM > > > To: [ExchangeList] > > > Subject: [exchangelist] RE: address with brackets > > > > > > > > > http://www.MSExchange.org/ > > > > > > Here is a link that should help you out: http://tinyurl.com/g8vq > > > > > > > > > Mark Fugatt > > > MCT, MCSE, Microsoft Exchange MVP > > > Pentech Office Solutions Inc > > > Tel: 585 586 3890 > > > Cell: 585 576 4750 > > > Fax: 585 249 0316 > > > www.4mcts.com > > > www.exchangetrainer.com > > > > > > > > > > > > -----Original Message----- > > > From: giordanocontigiani@xxxxxxxxxxxxxxxxx > > > [mailto:giordanocontigiani@xxxxxxxxxxxxxxxxx] > > > Sent: Saturday, September 13, 2003 3:48 AM > > > To: [ExchangeList] > > > > > > http://www.MSExchange.org/ > > > > > > RFC 822 require that SMTP server accept addres like > > > "name@[1.2.3.4]", > > where > > > mail domain is a dtext within brackets. My exchange 2000 server dont > > accept > > > this type of address (there is a manner to configure this?), second > > question > > > outlook client dont permit to send to this address (outlook express > > > permit > > > it) thanks for any info regards giordano contigiani sys admin > > > > > > ------------------------------------------------------ > > > List Archives: > > > http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > > > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > > > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > > > ------------------------------------------------------ > > > Other Internet Software Marketing Sites: > > > Leading Network Software Directory: http://www.serverfiles.com No.1 > > > ISA Server Resource Site: http://www.isaserver.org Windows Security > > > Resource > > > Site: http://www.windowsecurity.com/ Network Security Library: > > > http://www.secinf.net/ Windows 2000/NT Fax Solutions: > > > http://www.ntfaxfaq.com > > > ------------------------------------------------------ > > > You are currently subscribed to this MSExchange.org Discussion List as: > > > mark@xxxxxxxxx To unsubscribe send a blank email to > > > $subst('Email.Unsub') > > > > > > > > > > > > > > > ------------------------------------------------------ > > > List Archives: > > > http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > > > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > > > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > > > ------------------------------------------------------ > > > Other Internet Software Marketing Sites: > > > Leading Network Software Directory: http://www.serverfiles.com No.1 > > > ISA Server Resource Site: http://www.isaserver.org Windows Security > > > Resource > > > Site: http://www.windowsecurity.com/ Network Security Library: > > > http://www.secinf.net/ Windows 2000/NT Fax Solutions: > > > http://www.ntfaxfaq.com > > > ------------------------------------------------------ > > > You are currently subscribed to this MSExchange.org Discussion List as: > > > al.mulnick@xxxxxxxxxx To unsubscribe send a blank email to > > > $subst('Email.Unsub') > > > > > > ------------------------------------------------------ > > > List Archives: > > > http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > > > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > > > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > > > ------------------------------------------------------ > > > Other Internet Software Marketing Sites: > > > Leading Network Software Directory: http://www.serverfiles.com No.1 > > > ISA Server Resource Site: http://www.isaserver.org Windows Security > > > Resource > > > Site: http://www.windowsecurity.com/ Network Security Library: > > > http://www.secinf.net/ Windows 2000/NT Fax Solutions: > > > http://www.ntfaxfaq.com > > > ------------------------------------------------------ > > > You are currently subscribed to this MSExchange.org Discussion List as: > > > mark@xxxxxxxxx To unsubscribe send a blank email to > > > $subst('Email.Unsub') > > > > > > > > > > > > > > > ------------------------------------------------------ > > > List Archives: > > > http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > > > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > > > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > > > ------------------------------------------------------ > > > Other Internet Software Marketing Sites: > > > Leading Network Software Directory: http://www.serverfiles.com No.1 > > > ISA Server Resource Site: http://www.isaserver.org Windows Security > > > Resource > > > Site: http://www.windowsecurity.com/ Network Security Library: > > > http://www.secinf.net/ Windows 2000/NT Fax Solutions: > > > http://www.ntfaxfaq.com > > > ------------------------------------------------------ > > > You are currently subscribed to this MSExchange.org Discussion List as: > > > al.mulnick@xxxxxxxxxx To unsubscribe send a blank email to > > > $subst('Email.Unsub') > > > > > > ------------------------------------------------------ > > > List Archives: > > > http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > > > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > > > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > > > ------------------------------------------------------ > > > Other Internet Software Marketing Sites: > > > Leading Network Software Directory: http://www.serverfiles.com No.1 > > > ISA Server Resource Site: http://www.isaserver.org Windows Security > > > Resource Site: http://www.windowsecurity.com/ Network Security > > > Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: > > > http://www.ntfaxfaq.com > > > ------------------------------------------------------ > > > You are currently subscribed to this MSExchange.org Discussion List > > > as: johnlist@xxxxxxxxxxxxxxxxxxx To unsubscribe send a blank email > > > to leave-exchangelist- 1440469J@xxxxxxxxxxxxx > > > > > > ------------------------------------------------------ > > List Archives: > > http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > > ------------------------------------------------------ > > Other Internet Software Marketing Sites: > > Leading Network Software Directory: http://www.serverfiles.com No.1 ISA > > Server Resource Site: http://www.isaserver.org Windows Security Resource > > Site: http://www.windowsecurity.com/ Network Security Library: > > http://www.secinf.net/ Windows 2000/NT Fax Solutions: > > http://www.ntfaxfaq.com > > ------------------------------------------------------ > > You are currently subscribed to this MSExchange.org Discussion List as: > > al.mulnick@xxxxxxxxxx To unsubscribe send a blank email to > > $subst('Email.Unsub') > > > > ------------------------------------------------------ > > List Archives: > > http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > > ------------------------------------------------------ > > Other Internet Software Marketing Sites: > > Leading Network Software Directory: http://www.serverfiles.com > > No.1 ISA Server Resource Site: http://www.isaserver.org > > Windows Security Resource Site: http://www.windowsecurity.com/ > > Network Security Library: http://www.secinf.net/ > > Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com > > ------------------------------------------------------ > > You are currently subscribed to this MSExchange.org Discussion List as: > > johnlist@xxxxxxxxxxxxxxxxxxx > > To unsubscribe send a blank email to leave-exchangelist- > > 1440469J@xxxxxxxxxxxxx > > > ------------------------------------------------------ > List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > ------------------------------------------------------ > Other Internet Software Marketing Sites: > Leading Network Software Directory: http://www.serverfiles.com No.1 ISA > Server Resource Site: http://www.isaserver.org Windows Security Resource > Site: http://www.windowsecurity.com/ Network Security Library: > http://www.secinf.net/ Windows 2000/NT Fax Solutions: > http://www.ntfaxfaq.com > ------------------------------------------------------ > You are currently subscribed to this MSExchange.org Discussion List as: > al.mulnick@xxxxxxxxxx To unsubscribe send a blank email to > $subst('Email.Unsub') > > ------------------------------------------------------ > List Archives: http://www.webelists.com/cgi/lyris.pl?enter=exchangelist > Exchange Newsletters: http://www.msexchange.org/pages/newsletter.asp > Exchange FAQ: http://www.msexchange.org/pages/larticle.asp?type=FAQ > ------------------------------------------------------ > Other Internet Software Marketing Sites: > Leading Network Software Directory: http://www.serverfiles.com > No.1 ISA Server Resource Site: http://www.isaserver.org > Windows Security Resource Site: http://www.windowsecurity.com/ > Network Security Library: http://www.secinf.net/ > Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com > ------------------------------------------------------ > You are currently subscribed to this MSExchange.org Discussion List as: > johnlist@xxxxxxxxxxxxxxxxxxx > To unsubscribe send a blank email to leave-exchangelist- > 1440469J@xxxxxxxxxxxxx