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Sendmail from .cgi scripts is extremely slow
Problem:
When sending email messages from a perl script, something like the following code is used: open MAIL, '|/usr/sbin/sendmail -oi -t -odq'; print MAIL @message_with_headers; close MAIL; The email is queued properly but sendmail doesn't send it until MUCH later.
 
Solution:
Increase (or completely remove) the interval at which sendmail checks the message queue. On RH Linux systems, this is done by manually editing "/etc/rc.d/init.d/sendmail" and changing the default QUEUE= setting from "1h" to e.g. "5m".

For this change to take effect, stop and start the sendmail service:
1. "/etc/rc.d/init.d/sendmail stop"
2. Wait a few seconds
3. "/etc/rc.d/init.d/sendmail start"


 
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