erro too many smtp processes

[billmoore]

seems when ever I or my users try to send, we get the error that the server cannot send the email due to too many smtp processes running concurently.

is there a way to increase the max number of processes it can do ? or how can I fix this.

Bill

[DirectAdmin Support]

Hello,

You should be able to add something like:

smtp_accept_max = 10000

to the top section of the /etc/exim.conf

John

[billmoore]

I did that, server locked up repeatedly. took line out and now it will not allow email clients to log in to recieve email.

it is saying connection refused

Now what ?

Bill

[billmoore]

got it working, then set smtp_accept_max = 300 and it works fine now.

thanks for the assist

[billmoore]

is this max connections per second ? per hour ? any idea. I have it set to 600 and it still gets the error.

[DirectAdmin Support]

Simultaneous:

http://www.exim.org/exim-html-4.20/doc/html/spec_13.html#SECT13.16

You could also set it to 0 if you don't want a limit. The default is 20 if it's not set.

John

[billmoore]

I set the max_smtp_accept to 80 and the server continued to use all free memory and load the machine well over 250%

So as a test I used my firewall and blocked port 25. and then rebooted.

the cpu useage went to about 5% instead of the 260% it was running.

I then went in and set the default for the catchall accounts on the email servers to ignore if a user does not exist and then reenabled the port 25.

cpu is working at about 6% - 9% and all is going well. I think it was responding to the catchalls and resending like crazy, interesting now, free memory is now 870 meg instead of 3.5 meg

so exim was causing the problem.. but not like I would have expected. is there any way to set the default when a domain is created for the catchall to be set to drop unless otherwise set by the end user ?

Thanks for all the help.

Bill

[DirectAdmin Support]

Yes, you could create:

/usr/local/directadmin/scripts/cusom/domain_create_post.sh


#!/bin/sh

perl -pi -e "s/\*: :fail:/\*: :blackhole:/" /etc/virtual/${domain}/aliases


John

[billmoore]

Thanks, I will try it.

Bill