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Re: [Q] Warning: Connection rate limit reached (anvil), and "milter-reject: END-OF-MESSAGE"
From: Reindl Harald <h.reindl_at_nospam>Date: Sun Mar 06 2011 - 12:28:43 GMT
To: postfix-users@postfix.org
Sounds like you have set something like this in main.cf
anvil_rate_time_unit = 1800s
smtpd_client_connection_rate_limit = 50
this means "a maximum of 50 connection per half a hour from the same ip"
my example 50/18000 is from our live configuration on postfix-servers
as well our barracuda-spamfirewall and is really a good setting because
sometimes over weeks nobody reaches this limit
if it is reached there is surely a spammer delivering his crap
and postfix will reject temporary connections from the ip
a normal server will try later, a spammer will give up sooner or later
Am 06.03.2011 13:15, schrieb JKL:
>
> Dear all,
>
> ** QUESTION 1
> I just noticed this message appearing the log files (mail.log). I
> read a little on the page http://www.postfix.org/QSHAPE_README.html, but
> did not quite understand where my postfix problem lied. The queues are
> very quiet presently. This mail server does not have a lot of throughput.
>
> --------------------- Postfix Begin ------------------------
>
> 2105 *Warning: Connection rate limit reached (anvil)
> 4 Miscellaneous warnings
>
> 666.166K Bytes accepted 682,154
> 128.576K Bytes sent via SMTP 131,662
> 634.608K Bytes delivered 649,839
> ======== ==================================================
>
> 55 Accepted 20.15%
> 218 Rejected 79.85%
> -------- --------------------------------------------------
> 273 Total 100.00%
> ======== ==================================================
>
> 1 5xx Reject relay denied 0.46%
> 1 5xx Reject HELO/EHLO 0.46%
> 100 5xx Reject unknown user 45.87%
> 106 5xx Reject RBL 48.62%
> 2 5xx Reject header 0.92%
> 8 5xx Reject milter 3.67%
> -------- --------------------------------------------------
> 218 Total 5xx Rejects 100.00%
> ======== ==================================================
>
> 7 4xx Reject milter 100.00%
> -------- --------------------------------------------------
> 7 Total 4xx Rejects 100.00%
> ======== ==================================================
>
> 2406 Connections
> 158 Connections lost (inbound)
> 2406 Disconnections
> 36 Removed from queue
> 32 Delivered
> 13 Sent via SMTP
>
> 5 Timeouts (inbound)
> 1 Illegal address syntax in SMTP command
> 47 Hostname verification errors
> 18 TLS connections (server)
> 6 SASL authenticated messages
>
>
> ---------------------- Postfix End -------------------------
>
>
> ** QUESTION 2
> On an additional note a milter is rejecting these messages (about 40 each day). I am uncertain which milter is rejecting it from the message. Does anyone know how I can identify the milter:
>
> Mar 6 12:04:17 logout postfix/cleanup[18037]: D6861848C7: milter-reject: END-OF-MESSAGE from smtp143.junkemailfilter.com[69.50.231.143]: 4.7.1 Service unavailable - try again later; from=<REMOVED@REMOVED.org> to=<REMOVED@klunky.co.uk> proto=ESMTP helo=<junkemailfilter.com>
>
>
> Any one, any ideas? Perhaps, which is likly there is some misconfiguration.
>
> Best regards, s.
-- Mit besten Grüßen, Reindl Harald the lounge interactive design GmbH A-1060 Vienna, Hofmühlgasse 17 CTO / software-development / cms-solutions p: +43 (1) 595 3999 33, m: +43 (676) 40 221 40 icq: 154546673, http://www.thelounge.net/