On 17-Aug-2009, at 03:25, Martijn de Munnik wrote:
The 450 error triggers the spammer to retry sending the mail.
In point of fact, if it is a spammer sending you the mail, a 450 error
is often enough to dissuade them. This is the principle behind
greylisting.
However, if these are real
* Martijn de Munnik mart...@youngguns.nl:
Hi all,
Sometimes our mail server is 'under attack' and we get a lot of these
entries in our log file:
Aug 17 11:08:19 stevie.youngguns.nl postfix/smtpd[14890]: [ID 197553
mail.info] NOQUEUE: reject: RCPT from unknown[212.22.199.165]: 450 4.1.8
Martijn de Munnik schrieb:
Hi all,
Sometimes our mail server is 'under attack' and we get a lot of these
entries in our log file:
Aug 17 11:08:19 stevie.youngguns.nl postfix/smtpd[14890]: [ID 197553
mail.info] NOQUEUE: reject: RCPT from unknown[212.22.199.165]: 450 4.1.8
On Mon, 2009-08-17 at 11:28 +0200, Ralf Hildebrandt wrote:
* Martijn de Munnik mart...@youngguns.nl:
Hi all,
Sometimes our mail server is 'under attack' and we get a lot of these
entries in our log file:
Aug 17 11:08:19 stevie.youngguns.nl postfix/smtpd[14890]: [ID 197553
* Martijn de Munnik mart...@youngguns.nl:
Do you have a caching DNS server?
Yes, but still things can go wrong and I don't want a failing DNS lookup
to be fatal.
Postfix always returns a 4xx in case of such failures
As far as I know it does. But I see it is also included in
On Mon, 2009-08-17 at 12:46 +0200, Ralf Hildebrandt wrote:
* Martijn de Munnik mart...@youngguns.nl:
Do you have a caching DNS server?
Yes, but still things can go wrong and I don't want a failing DNS lookup
to be fatal.
Postfix always returns a 4xx in case of such failures
As
* Martijn de Munnik mart...@youngguns.nl:
I'd put them all into smtpd_recipient_restrictions #:)
http://www.postfix.org/SMTPD_ACCESS_README.html#danger
Doesn't apply for your restrictions
--
Ralf Hildebrandt
Geschäftsbereich IT | Abteilung Netzwerk
Charité - Universitätsmedizin Berlin
On Mon, 2009-08-17 at 12:46 +0200, Ralf Hildebrandt wrote:
* Martijn de Munnik mart...@youngguns.nl:
Do you have a caching DNS server?
Yes, but still things can go wrong and I don't want a failing DNS lookup
to be fatal.
Postfix always returns a 4xx in case of such failures
As
* Martijn de Munnik mart...@youngguns.nl:
I'd put them all into smtpd_recipient_restrictions #:)
I did some updates in my main.cf. I've attached the updated file. I kept
the restrictions with the different smtpd_*_restrictions, I find it a
little easier to understand.
Thus your initial
On Mon, 17 Aug 2009 13:39:39 +0200, Ralf Hildebrandt
ralf.hildebra...@charite.de wrote:
smtpd_recipient_restrictions =
reject_unverified_recipient,
reject_unauth_destination,
is a unverified recipient a auth destination ? :)
--
Benny Pedersen
Martijn de Munnik wrote:
Hi all,
Sometimes our mail server is 'under attack' and we get a lot of these
entries in our log file:
Aug 17 11:08:19 stevie.youngguns.nl postfix/smtpd[14890]: [ID 197553
mail.info] NOQUEUE: reject: RCPT from unknown[212.22.199.165]: 450 4.1.8
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