Server : The e-mail server AcyMailing should connect to to handle messages.
Port : Port of your e-mail server. In most cases, it will be 110 for POP3, 143 for IMAP and 993 for IMAP using a secured connection. You can leave this field empty if you don't know what to use.
Connection method : Choose the method AcyMailing should use to connect to your mailbox. (if you use GMail, you should select "IMAP")
Secure method : You can select a secured method to connect to your e-mail server (if you use GMail, you should select "SSL")
Self-Signed certificate : Do you want AcyMailing to auto-sign your certificates?
Username : Username used to connect to your e-mail account. In most cases, it will be the same as your bounce email address.
Password : Password used to connect to your e-mail account.
Connection timeout (seconds) : Set the maximum number of seconds AcyMailing should try to connect to your e-mail server before stopping. 10 seconds is a good default value.
Maximum number of e-mails : Each time AcyMailing will connect to your mailbox, it will handle a series of e-mails. You can set the maximum number of e-mails AcyMailing will handle at the same time.
Enable the automatic bounce handling : Once tested, you will want this system to run automatically so you can then turn On this option and let AcyMailing do the job. Make sure a cron task is running.
Frequency: set the frequency you want AcyMailing to check your bounce mailbox.
Once it has been triggered, some reports will be displayed too (Last and next run time as well as a report).
You can configure in details the bounce rules here.