[Standards] RFC 3920, 10.2/10.3: subdomain routing rules

Philipp Hancke fippo at goodadvice.pages.de
Wed Mar 28 10:52:05 UTC 2007

Matthias Wimmer schrieb:
> Philipp Hancke schrieb:
>>> The only "special" routing that I'm aware of, is that if a domain 
>>> resolves to the same IP address as one which you already have an 
>>> active dialback s2s stream with, then you can initiate a new dialback 
>>> right over the existing stream.  (Server guys: correct me if I'm wrong).
>> In the post-dialback (or even with starttls+dialback) world you dont
>> want such reuse (tls+sasl being the main reason for this). So this
>> applies only to dialback anyway.
> And also for dialback this is nothing "special" for subdomains. You can 
> reuse the connection also if it is a totally different domain, that 
> resolves to the same host, no?

Yes. Though I would really like to see "active" piggybacking deprecated
in 3920bis (accepting piggybacking if the remote server tries that
must still be implemented for backward compability reasons).

There are many things that can go wrong with it and the benefits are


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