Qmail – Speed up mail sending process by tunning tcpserver settings

Published on Author gryzliLeave a comment

If you want to speed up qmail/tcpserver sending mails, you could try the following:

1. Open the file supervise/qmail-smtpd/run

2. Change the following line:


This will enable TCP_NODELAY (-D option) and also disable attempts to resolve $TCPREMOTEINFO (-R option).

3. Info about tcpserver options

General options:

Connection options:

Data-gathering options:

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