[EMAIL PROTECTED] (Eric S. Emerson) wrote: > > I don't understand this discussion. > What is ORBS and this open relays stuff? Why would > Arachne be blocked, what ever that means? Say you have three ISP'a A, B, C. The mailserver at A will normally relay e-mail from A to B and C, and from B and C to A. If the mailserver at A does not relay e-mail from B to C or C to B, it is closed (relaying denied). This is now considered "best practice" on the Internet (RFC2505). If the mailserver at A does relay e-mail from B to C or C to B, it is open. This is how a lot, if not most, spam is sent. There are a couple of groups that test and keep track of open relays. ORBS is one of these, RSS is another. Some ISP's block any e-mail from mailservers on these "real-time" lists of open relays. It seems that the mailserver ns.arachne.cz (212.24.129.58) found itself on the ORBS list of open relays and was being blocked by Clarence's ISP. When I checked last night, it had been removed from the list and was being retested. See http://www.mail-abuse.org/tsi/ and http://www.orbs.org/ . Howard Eisenberger Ottawa, Canada -- DOS TCP/IP * http://www.ncf.ca/~ag221/dosppp.html
