On Mon, Jul 26, 2004 at 01:21:30AM +0200, Marco d'Itri wrote:
>
> This is evil. The HELO argument should be a domain name, not an IP
> address, even in brackets.
> Postfix is correct in refusing this, fix thunderbird.
No, it's not. RFC 2821 Section 4.1.1.1 clearly says an IP address is
allowed:
The argument field contains the fully-qualified domain name of the
SMTP client if one is available. In situations in which the SMTP
client system does not have a meaningful domain name (e.g., when its
address is dynamically allocated and no reverse mapping record is
available), the client SHOULD send an address literal (see section
4.1.3), optionally followed by information that will help to
identify the client system.
