I think the other thing to consider is setting "smtp_accept_max = 10" means you can only process up to 10 e-mails at one time. If you are doing a number of checks, Virus, multiple blacklist checks - these tests can take a while - possible a meaningful amount of seconds each. Just bear that in mind. You probably want to increase"smtp_accept_max" quite a bit. I've also changed my "log selector":
log_selector = +subject +incoming_interface +incoming_port +smtp_connection (sits in the same config area as "smtp_accept_max = 10") Now, when tailing the exim_main.log log file, you can see what the "Connection Count" number is. I think you'll find this useful. 2017-01-25 11:04:50 SMTP connection from [S.S.S.S]:1188 I=[D.D.D.D]:25 (TCP/IP connection count = 3) On 24/01/2017 20:33, The Doctor wrote: > On Tue, Jan 24, 2017 at 12:34:23PM -0500, Chris Siebenmann wrote: >>> I cannot find the culprit doing this. >>> >>> Using Exim 4.88 on FreeBSD 11 I placed this into my configuration: >> [...] >>> smtp_accept_max = 10 >> Well, you have a limit of 10 simultaneous SMTP connections period. >> Once you have ten active ones, any further connections will get this >> message. >> >>> smtp_accept_max_per_host = 5 >> ... and a single IP can only have five connections at once. >> >> Note that despite the names being very similar to each other, >> 'smtp_accept_max_per_connection' means something completely >> different than 'smtp_accept_max_per_host'. One is about limits >> on SMTP connections, one is about limits on MAIL commands within >> a single connection. >> >> If your problem is that you cannot see where the connections >> are coming from, look at what 'exiwhat' reports, as well as >> ps, netstat, lsof, and other similar tools for looking at >> network connections. >> >> - cks > Provided that the server can respond. > -- Mark James ELKINS - Posix Systems - (South) Africa [email protected] Tel: +27.128070590 Cell: +27.826010496 For fast, reliable, low cost Internet in ZA: https://ftth.posix.co.za -- ## List details at https://lists.exim.org/mailman/listinfo/exim-users ## Exim details at http://www.exim.org/ ## Please use the Wiki with this list - http://wiki.exim.org/
