『AskWan』

One of the strengths of phpList is its handling of "bounces".
A bounce is an email message that is returned because it could not be delivered for a number of reasons: The mailbox of the recipient might be full, the email address might no longer be valid or temporarily disabled, the email address might be misspelled, etc. A bounce is not the same as an out-of-office reply. For more info, see this Wikipedia article on bounces.

editor config.php file

look for "Settings for handling bounces" section

$message_envelope = 'hawking@localhost';
$bounce_protocol = 'mbox';

define ("MANUALLY_PROCESS_BOUNCES",1);
$bounce_mailbox_port = "110/pop3/notls";

# when the protocol is pop, specify these three
$bounce_mailbox_host = 'localhost';
$bounce_mailbox_user = 'askwan@localhost';
$bounce_mailbox_password = 'askwan.com';
$bounce_unsubscribe_threshold = 3;

then save it .

now, install exim4 and dovecot

apt-get install exim4 exim4-base exim4-config dovecot-common dovecot-pop3d

configure exim4 and dovecot.conf

protocols = pop3

disable_plaintext_auth = no

ssl_disable = yes
mail_location = mbox:~/mail:INBOX=/var/mail/%u

last, restart dovecot and exim4

then you can use foxmail receive email from you phplist host that have bounced !