On a Plesk server, the maximum size for an individual e-mail sent through qmail is unlimited. You can limit this size by adding a number to the /var/qmail/control/databytes file.
If you wanted to limit this to something like 10MB, you can just run the following command:
echo “10485760″ > /var/qmail/control/databytes
This will limit the size of messages [...]
I really dislike qmail. But, since I use Plesk, I’m stuck with it. However, I found a way to improve it’s awful mail queue performance by putting the mail queue onto a ramdisk. This is actually pretty darned easy to do.
First, toss a line like this into your /etc/fstab:
none [...]
If you have a new Plesk installation and the following option is greyed out in Server -> Mail:
Switch on spam protection based on DNS blackhole lists
Just install the following RPM from Plesk:
psa-qmail-rblsmtpd
I stumbled upon this peculiar bounce message recently while working on a server:
Hi. This is the qmail-send program at yourmailserver.com.
I’m afraid I wasn’t able to deliver your message to the following addresses.
This is a permanent error; I’ve given up. Sorry it didn’t work out.
<user1@domain.com>:
This message is looping: it already has my Delivered-To line. (#5.4.6)
— Below [...]
I stumbled upon a server running Plesk 8.2.1 where a certain user could not receive e-mail. I sent an e-mail to the user from my mail client, and I never saw it enter the user’s mailbox. It didn’t even appear in the logs.
After checking the usual suspects, like MX records, mail account configuration, [...]
