Jonas Eckerman wrote: > Vivek Khera wrote: > >> On Nov 29, 2007, at 10:19 AM, Mike Jackson wrote: >> >>> It also confirms that your SMTP banner greeting matches the reverse >>> DNS. >> >> Who requires this? > > The hostname in the banner is usually the same hostname as in > HELO/EHLO, and it's often a good idea to HELO/EHLO with a hostname > that matches RDNS. >
You are confused. Many hosts are for inbound mail only. They have banner but won't helo to outsiders. and even on hosts that send outbound mail, there is absolutely no requirement that the banner matches the rDNS of some IP. Anyway, the site says "... This determines if your IP and SMTP HELO matches". This is non sense since HELO is used by the client. Note also that providing a free page to probe servers is not without risks. site admin should throttle, use a CAPTCHA, ... etc. > (I don't know if that's the reason for the check, but it does make > sense if it is.) > > Regards > /Jonas >
