On 20-Jan-07, at 2:37 PM, Peter J. Holzer wrote:
Nonsense. I block all mail from <> and have done for 2 years (maybe
more).
Do you do this at DATA? Because I get through RCPT fine with your
email
address:
I think so. I wrote it so long ago I can't remember :-)
There's no harm been done,
You won't get any bounces, so if one of your mails can't be delivered
after it has left your MTA, you won't get notified. Also, if you block
it at the MAIL or RCPT stage, SMTP callbacks (as done by Exim,
Postfix,
or my smtp_callback plugin) won't work and you won't be able to send
mails to MXs which use this.
SMTP callbacks are broken by design if they assume that a rejection
of RCPT TO <> means the domain isn't valid.
But I accept the consequences of what rejecting <> does - but the
value in accepting that mail is about as high as accepting mail
without a Date: header or without a Message-Id header (both things I
reject also).
and for my little domain with 2 users I'm blocking up to 30k
emails a
day that way.
30k emails for existing email addresses? You must have seriously
pissed
off some spammers.
Well, it's what I do for a living, so maybe. But I'm not about to
give up my domain because of that - I might as well change my surname
to zyxchronazchybzicky if I wanted to do that :-)
Matt.
