On 30/09/03 21:07 +0530, Payal Rathod wrote: > On Tue, Sep 30, 2003 at 07:09:04PM +0530, Suresh Ramasubramanian wrote: > > G.Vinubalaji [9/30/2003 7:19 PM] : > > > > >Finally my mails are getting through after i requested for a change in > > >the EHLO configuration option of my company qmail installation. > > > > Good for you. HELO filtering traps a TON of spam - and we use it > > extensively. > > No. I repeat again. Filter based on just HELO is bad. I would suggest The RFC mandates that the HELO/EHLO MUST be a FQDN. If you are not RFC compliant, I suggest fixing the problem at your end.
> Suresh you also don't use it. Come on Suresh, you mean to say I on > dial-up cannot send you any mails. That is bad. Eh? You do realise that Suresh handles a few million mailboxes, right? And that they REJECT a lot of spamware which is broken? > > A clear PERMFAIL 5xx is issued. What do you mean the mail is denied but > > not bounced back? > > I think the mail is *rejected* at SMTP level so no question of bouncing > it back. It depends on his MTA what to do with the *rejected* mail. Correct. His MTA has to generate the bounce. > > Sourceforge does a few other things. > > > > 1. Checks for a proper HELO - syntactically correct (underscores are not > > valid in HELO for example) > > hmmm. > > > 2. Makes a smtp callback (connects back to the sending domain's MX and > > verifies if ... 1. the user sending it exists, 2. [EMAIL PROTECTED] > > exists)... only then does it let your mail through. > > ugghhhh. Is sourceforge serious? You mean it will connect to my domain > and actually use the VRFY verb to check if my email address / username exists? VRFY? No. It will connect to your MX and try a mail from: <[EMAIL PROTECTED]> rcpt to: <[EMAIL PROTECTED]> If it doesn't get a 250 response, then Sourceforge will not accept the mail. There is no reason to accept a mail that cannot be bounced. > My MTA would NEVER allow that. If it did it would be a bonanza for > spammers just verify address and do it. I think no modern MTA should > ever do this. You don't need VRFY. > p.s. are you the "middle-class system administrator" Yes. He is. Devdas Bhagat ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ linux-india-help mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/linux-india-help
