For more information or technical support by phone on Sendmail Tuning call: 410 838 5100
Sendmail tuning like any system tuning is as much of an art as it a science. Trying to find the root cause of slow performance or mail issues can be difficult. As a matter of fact poor performance of your server as whole would contribute to performance issues with sendmail. That being said you can try some of the following in your sendmail.mc file:
This tells sendmail to hold any df file for a message in memory not write it to disk until it exceeds 4000 bytes.
This tells sendmail to hold any xf file for a message in memory not write it to disk until it exceeds 2000 bytes. By using the above defines you can eliminate the creation and deletion of two of the three files that are used for each message created. This will save on disk I/O and save on queue space.
If you have a large amount of available memory make them even larger especially if you have many large emails with large attachments.
The faster your network connection the faster email can come and go.
This tells sendmail to limit the Maximum size of a message to 15meg. Adjust the size to your needs being aware that each system you send or receive email from will have their own limit.
Have you ever seen an email where there are hundreds of addresses in the header. Most users don't realize a mail client is not a list server. This option sets a limit on the number of recipients per message.
For more information or support on sendmail call 410-838-5100 or email us experts@expertsinunix.com
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