FW: [PHP] email validation (no regex)

(private email forwarded to list) -----Original Message----- From: replies-lists-php@listmail.innovate.net Sent: Wednesday, September 21, 2005 2:19 PM To: Jim Moseby Subject: Re: [PHP] email validation (no regex) There's no requirement for an MX-record, so you'd need to check the A-record ($domain) too. This approach is likely extremely resource and time intensive. So, in my view, not something that you'd really want to do while the user is "holding on the line". - Rick ---------- End Original Message ---------- Excellent answer. No requirement for MX record? [showing my ignorance] How does email routing happen if there is no mail exchanger in the zonefile for a particular domain? [/ignorance] "Time and resource intensive" is the only down-side I have been able to think of. Even though it should run very quickly, I have no control over internet lag, load on the SMTP server, etc. Doing it this way places all those variables out of my control. A definate downside. JM