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Submission and SMTP SRV records

2004-03-16 14:54:52

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.

Pete Resnick <>
QUALCOMM Incorporated - Direct phone: (858)651-4478, Fax: (858)651-1102