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Re: Submission and SMTP SRV records

2004-03-16 15:22:27

[top-post for context]


I have gotten some recent feedback and am going to be updating it soon.
I'd like to hear any feedback you might have on it.

On 3/16/2004 3:54 PM, Pete Resnick wrote:

Is anyone implementing SRV records for either SMTP or for Submission 
(i.e., SMTP SUBMIT extension)? Some talk about implementation raised 
some questions:

- SRV is pretty redundant with MX for SMTP, though you could 
conceivably use SRV to specify an alternate port number. Has anyone 
attempted this?

- SRV for submission is an interesting way for an client to figure 
out which server/port it should contact, but what exactly would the 
query look like? Should you take the right hand side of your e-mail 
address and query, taking me as an example, Should you be looking up (assuming your own IP address 
is And again, has anyone tried any of this?

It would be nice if we had a convention for such a lookup.


Eric A. Hall                              
Internet Core Protocols