Klaus+exim at Ethgen
Nov 25, 2011, 6:15 AM
Post #1 of 1
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Strange behaviour in rate limiting
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Hello,
I have a setup where we limit the sending rate for users respective IPs
to 1500 per hour. That worked fine and reliable.
However, I encountered a strange problem. Two times now I had the case
that an IP that was not send mails before start with 1500 (exact
1500.6/1h), went up to 1500.7/1h and then fast down when the IP did sent
the mail again. I have no idea where the start value of 1500 comes from.
The relevant part in the ACL config:
deny
!hosts = /etc/exim4/legitimed_sender
!authenticated = *
ratelimit = RATE_LIMIT / 1h / per_rcpt / leaky / $sender_host_address
!domains = our.domain : *.our.domain
log_message = Rejected $sender_host_address due over rate with $sender_rate/$sender_rate_period
message = Rate limited
I use exim version 4.71 from ubuntu.
Anybody a idea where this strange behaviour could come from? Ah, yes,
RATE_LIMIT is set to 1500 in main section.
Regards
Klaus
- --
Klaus Ethgen http://www.ethgen.ch/
pub 4096R/4E20AF1C 2011-05-16 Klaus Ethgen <Klaus [at] Ethgen>
Fingerprint: 85D4 CA42 952C 949B 1753 62B3 79D0 B06F 4E20 AF1C
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