Joe Young wrote:
Sorry, They have a DSL connection with verizon. Their connection with verizon is 640k down and 256k up.They The server is inhouse and they will send email to it. The emails will somethings be 8megs big sent to multiple people. The server will then send multiple 8meg emails at the same time.
I had just assumed that qmail-send was a separate process. I just forgort the qmail big picture and how it works.
I checked that squirrel mail sends email through SMTP. So adding the /var/qmail/control/databytes will slow down how fast the SMTP recives inbound local email and outbound email that is not local to server? Correct?
Actually, databytes just controls the allowed size of the message itself, it does not set/limit the actual MTA to MTA transmit speed at all.
I think you will have to look for some iptables QOS rules to help you out with this rather than anything in qmail that can help. Basically you would try and make the smtp traffic lower priority than browsing, I wouldn't put it too low because you really don't want SMTP to struggle too much sending out a message. Probably best to have staff limit surfing if it isn't work related, etc. while these mail sends are going on.
Another option may be to use Apache on a local server there with the email having a link to that, you could use an Apache module I think to slow thoroughput down a bit without messing with iptables.
John
