Re: Email validator and mx records for subdomains
Ian Bicking <[email protected]>
| Newsgroups | gmane.comp.python.formencode |
|---|---|
| Message-ID | <[email protected]> |
Jacob Smullyan wrote: > Today someone tried to submit a form on one of the websites I > maintain, entering an email address of the form > "soandso-gifGjc5/[email protected]". The Email validator, set to check mx, > rejected this because forums.nyu.edu doesn't have an MX record. > However, nyu.edu does and the mail would in fact be delivered. > > I'm not quite sure of what validation behavior would be most correct > and/or useful. Would it be better if the validator first tried > d0.d1...dn.edu, then d1...dn.edu, then finally dn.edu for mx records? MTAs will start looking up higher-level DNS when there's nothing lower down? That seems pretty weird. Is it actually that it's only looking up MX, when it should look up MX and then a normal domain? I think the behavior is usually to fall back on the normal DNS when there's not MX record. Oddly, I can't figure out what the simple way to lookup a DNS record in pyDNS is. -- Ian Bicking | [email protected] | http://blog.ianbicking.org ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys-and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV