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Old 6th June 2008, 20:00
sagor sagor is offline
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Default Where to set maximum Postfix SMTP connections?

I'm seeing a lot of spammer attackes trying to get into my SMTP system, and I notice that Postfix is allowing up to 51 connections.

Jun 4 05:01:57 website postfix/anvil[30924]: statistics: max connection rate 99/60s for (smtp: at Jun 4 04:58:25
Jun 4 05:01:57 website postfix/anvil[30924]: statistics: max connection count 51 for (smtp: at Jun 4 04:58:24

I'd like to reduce this setting to about 5 or 10, considering this web server is just for my private web sites. I see Postfix does have some settings like:

client_connection_rate_time_unit = 15s
smtpd_client_connection_count_limit = 30
smtpd_client_connection_rate_limit = 30

But I see no such entries in my main.cf at the moment. Is there a way to limit connections via ISPConfig? Or do I have to add these to my main.cf file manually. Is there any other way of ISPConfig to control incoming mail connection limits?


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Old 7th June 2008, 13:02
falko falko is offline
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You'd have to do this Postfix configuration manually. ISPConfig cannot do this.
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