Re: postfix can't send and receive mails (SOLVED) - resend
On Wed, 12 Nov 2008 21:25:24 +0800 (CST)
Stephen Liu <satimis@yahoo.com> wrote:
> building postfix virtual which is my goal.
Hm, if you want to make it "virtual only", I guess you would have to
have an empty mydestinations and add all the domains for which mail is
to be delivered locally (that is somewhat illogical, though, because
the mail is actually being delivered locally, just using a different
transport) to the database (or to where ever you store the list of
virtual domains).
If you do not serve a large number of domains and/or users that are not
local users on the host, you don't need to use virtual domains at all.
It still doesn't work right before you fix the setup of virtual
domains. Either remove it, or fix it, but if you fix it, you will have
to do something about mydestinations. If you fix it and leave
mydestinations untouched, you will have specified two different ways of
dealing with mail for some of the domains you serve (i. e. deliver
locally and deliver "virtually").
> Nov 12 12:48:10 xen05 postfix/smtpd[3378]: NOQUEUE: reject: RCPT from
> web35208.mail.mud.yahoo.com[66.163.179.87]: 450 4.7.1
> <satimis@satimis.com>: Recipient address rejected: Greylisted, see
> http://isg.ee.ethz.ch/tools/postgrey/help/satimis.com.html;
> from=<satimis@yahoo.com> to=<satimis@satimis.com> proto=SMTP
> helo=<web35208.mail.mud.yahoo.com>
>
> It also arrived, being added on the same file /var/spool/mail/satimis
> again.
But the recipient address <satimis@satimis.com> is graylisted for some
reason. And afair, 450 is a temporary error, telling the sending MTA to
try again later because it is to be expected that the problem will be
solved and the mail can be accepted later, see the RFC. You need to
find out why this message has been delivered though it shouldn't, and
weather 450 is the right response or not: If you always don't want to
accept incoming mail to greylisted addresses, the response should be
550.
To be curious, what happens when a mail is detected to be SPAM or to
contain a virus? Exim can have mails scanned before accepting them; does
postfix the same? I would highly recommend that because it's pretty
much the only policy you can have for viruses: It prevents you from
making mail vanish without notice --- which is not acceptable in any
case --- and from flooding the mail queue with error messages that
cannot be delivered and should not be sent in response to viruses
anyway. You can do the same for SPAM, unless you have users who prefer
to deal with SPAM themselves. Since sending error messages in response
to SPAM is pretty useless, it's best not to accept SPAM in the first
place (unless users want to get it). To ward off more SPAM, Exim can do
sender verification (amazingly effective and better than scanning
because scanning for SPAM takes a lot of ressources) and thus deny to
accept mail from non-existing or unreachable sender addresses --- also
highly recommended because it is impossible to correctly handle any
mail from unreachable senders: How would you send the sender an error
message if needed? You can't, thus your server would make mail
vanish, which is not acceptable, and it is not correct handling not to
send one when needed. So don't accept mail you know you cannot handle
correctly. If postfix can do all that, set it up to do it. If it can't,
use Exim ...
> I have no idea what does it refer to on following link;
>
> http://isg.ee.ethz.ch/tools/postgrey/help/satimis.com.html
This is probably not the right URL. I guess it should point to the
postgrey you are running on xen05, not the postgrey running on another
computer. You might have to change that somewhere in the configuration
of something (probably postgrey).
> Again sent another mail on Gmail to satimis@satimis.com. It also
> arrived being added to /var/spool/mail/satimis file
How comes that the recipient address is greylisted when you send mail
from yahoo but not when you send mail from gmail to the same recipient
address?
> Now how can I make the 1st incoming mail creating subdirectoris /cur
> /new etc automatically. TIA
You need to configure postfix to use maildir instead of (I think) mbox.
What about:
> drwxr-sr-x 2 virtual virtual 4096 2008-11-08 06:33 virtual
? Is that a directory in which the mail is delivered that goes to
virtual domains?
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