On 3/9/2005 3:29 PM, List Mail User wrote: >> See section 3.6 of RFC 2821: >> >> | - The domain name given in the EHLO command MUST BE either a >> primary | host name (a domain name that resolves to an A RR) or, >> if the host | has no name, an address literal as described in >> section 4.1.1.1.
> 3.6 Domains > used. There are two exceptions to the rule requiring FQDNs: ..." > > Nothing in either the section you have quoted, or the one I have allows > a hostname which is not a FQDN to be used. see the first "exception", which is the text I cited above. >> Technically, addresses that are NOT enclosed in brackets are illegal, >> but those are the only ones that SA sniffs out currently. > > Of course, my machines just refuse these during the SMTP conversation, Many do. BTW, postfix has similar problems wrt literals. For example, if postfix gets a regular address (non-literal) in the HELO, it will split the address into octets and do lookups for PERMIT/REJECT ACLs on incrementally smaller sets, which is all very nice. But if it finds a literal, it doesn't parse for the address inside, and treats the literal like a domain name. Another bug here is that the strict-syntax checks in postfix don't match against non-literal addresses, which it should (RFC1123 spells out what is a valid hostname, and all-numerics is clearly not legal). > Please be careful and check the definitions and references in each > document indeed -- Eric A. Hall http://www.ehsco.com/ Internet Core Protocols http://www.oreilly.com/catalog/coreprot/
