How to increase memory limit for Dovecot POP3 and IMAP processes

Introduction

If you receive warnings that the Dovecot service has run out of memory, you might want to consider increasing its memory limit. Warning email subjects may resemble the following:

• The “lmtp” service reached its memory limit while it accessed mail
• The “imap” service reached its memory limit while it accessed mail

The memory limit for Dovecot can be increased via the Mailserver Configuration page.

Procedure

1. Login to WHM
2. Navigate to: "Home / Service Configuration / Mailserver Configuration"
3. Locate the "Process Memory Limit for Mail (MB)" setting.
4. Set the desired memory limit.
5. Save the changes.

Additional resources

Mailserver Configuration