hMailServer中文论坛

FROM:<sender@[192.168.1.100]>
TO:<receiver@[192.168.1.101]>

RFC 2821描述如果不用domain name，使用IPv4地址的话，应当在IPv4地址加上一对中括号[]。hmailserver支持IPv4地址加中括号嘛？
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].