我按照 Sam Hobbs 的教程在 Pi 上设置了 Postfix Dovecot 电子邮件服务器，经过大量研究和尝试，我让 Pi 服务器运行起来（可以发送和接收电子邮件），但我尝试连接到 Thunderbird 和 Evolution，但无济于事。我是个菜鸟，总是依赖陌生人的善意。提前致谢。
砰！（代码转储）main.cf
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
# Debian specific: Specifying a file name will cause the first
# line of that file to be used as the name. The Debian default
# is /etc/mailname.
#myorigin = /etc/mailname
smtpd_banner = $myhostname ESMTP $mail_name (Raspbian)
biff = no
# appending .domain is the MUA's job.
append_dot_mydomain = no
# Uncomment the next line to generate "delayed mail" warnings
#delay_warning_time = 4h
readme_directory = no
# See http://www.postfix.org/COMPATIBILITY_README.html -- default to 2 on
# fresh installs.
compatibility_level = 2
tls_random_source = dev:/dev/urandom
# SMTP from your server to others
smtp_tls_key_file = /etc/ssl/private/server.key
smtp_tls_cert_file = /etc/ssl/certs/cacert.pem
smtp_tls_CAfile = /etc/ssl/certs/cacert.pem
smtp_tls_security_level = may
smtp_tls_note_starttls_offer = yes
smtp_tls_mandatory_protocols=!SSLv2,!SSLv3
smtp_tls_protocols=!SSLv2,!SSLv3
smtp_tls_loglevel = 1
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
# SMTP from other servers to yours
smtpd_tls_auth_only = yes
smtpd_tls_mandatory_protocols=!SSLv2,!SSLv3
smtpd_tls_protocols=!SSLv2,!SSLv3
smtpd_tls_loglevel = 1
smtpd_tls_cert_file= /etc/ssl/certs/cacert.pem
smtpd_tls_key_file= /etc/ssl/private/server.key
smtpd_tls_CAfile = /etc/ssl/certs/cacert.pem
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
# See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for
# information on enabling SSL in the smtp client.
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myhostname = host.domain.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = easydns.com
mydestination = $myhostname, domain.com, mail, localhost.localdomain, localhost
relayhost = [mailout.easydns.com]
mynetworks = 192.xxx.x.xx, 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = 192.xxx.x.xx, 127.0.0.1
inet_protocols = ipv4
home_mailbox = Maildir/
mailbox_command =
smtpd_recipient_restrictions =
permit_sasl_authenticated,
permit_mynetworks,
reject_unauth_destination
smtpd_helo_required = yes
smtpd_helo_restrictions =
permit_mynetworks,
permit_sasl_authenticated,
reject_invalid_helo_hostname,
reject_non_fqdn_helo_hostname,
reject_unknown_helo_hostname,
check_helo_access hash:/etc/postfix/helo_access
# Added for smtp auth
# enable SASL authentication
smtp_sasl_auth_enable = yes
# disallow methods that allow anonymous authentication.
smtp_sasl_security_options = noanonymous
# where to find sasl_passwd
smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd
# Enable STARTTLS encryption
smtp_use_tls = yes
# where to find CA certificates
smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_sasl_auth_enable = yes
smtpd_tls_auth_only = yes
smtp_tls_wrappermode = yes
smtp_tls_security_level = encrypt
ANNNNNND master.cf
#
# Postfix master process configuration file. For details on the format
# of the file, see the master(5) manual page (command: "man 5 master" or
# on-line: http://www.postfix.org/master.5.html).
#
# Do not forget to execute "postfix reload" after editing this file.
#
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (no) (never) (100)
# ==========================================================================
smtp inet n - y - - smtpd
#smtp inet n - y - 1 postscreen
#smtpd pass - - y - - smtpd
#dnsblog unix - - y - 0 dnsblog
#tlsproxy unix - - y - 0 tlsproxy
submission inet n - y - - smtpd
# -o syslog_name=postfix/submission
-o smtpd_tls_security_level=encrypt
-o smtpd_sasl_auth_enable=yes
# -o smtpd_tls_auth_only=yes
# -o smtpd_reject_unlisted_recipient=no
-o smtpd_client_restrictions=permit_mynetworks,permit_sasl_authenticated,reject
-o smtpd_helo_restrictions=permit_mynetworks,permit
# -o smtpd_sender_restrictions=$mua_sender_restrictions
-o smtpd_recipient_restrictions=permit_mynetworks,permit_sasl_authenticated,reject
# -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
smtps inet n - y - - smtpd
-o syslog_name=postfix/smtps
-o smtpd_tls_wrappermode=yes
-o smtpd_recipient_restrictions=permit_sasl_authenticated,reject
-o smtpd_relay_restrictions=permit_sasl_authenticated,reject
# -o syslog_name=postfix/smtps
# -o smtpd_tls_wrappermode=yes
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_reject_unlisted_recipient=no
# -o smtpd_client_restrictions=$mua_client_restrictions
# -o smtpd_helo_restrictions=$mua_helo_restrictions
# -o smtpd_sender_restrictions=$mua_sender_restrictions
# -o smtpd_recipient_restrictions=
# -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
#628 inet n - y - - qmqpd
pickup unix n - y 60 1 pickup
cleanup unix n - y - 0 cleanup
qmgr unix n - n 300 1 qmgr
#qmgr unix n - n 300 1 oqmgr
tlsmgr unix - - y 1000? 1 tlsmgr
rewrite unix - - y - - trivial-rewrite
bounce unix - - y - 0 bounce
defer unix - - y - 0 bounce
trace unix - - y - 0 bounce
verify unix - - y - 1 verify
flush unix n - y 1000? 0 flush
proxymap unix - - n - - proxymap
proxywrite unix - - n - 1 proxymap
smtp unix - - y - - smtp
relay unix - - y - - smtp
-o syslog_name=postfix/$service_name
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - y - - showq
error unix - - y - - error
retry unix - - y - - error
discard unix - - y - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - y - - lmtp
anvil unix - - y - 1 anvil
scache unix - - y - 1 scache
postlog unix-dgram n - n - 1 postlogd
#
# ====================================================================
#Interfaces to non-Postfix software. Be sure to examine the manual
# pages of the non-Postfix software to find out what options it wants.
#
# Many of the following services use the Postfix pipe(8) delivery
# agent. See the pipe(8) man page for information about ${recipient}
# and other message envelope options.
# ====================================================================
#
# maildrop. See the Postfix MAILDROP_README file for details.
# Also specify in main.cf: maildrop_destination_recipient_limit=1
#
maildrop unix - n n - - pipe
flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
#
# ====================================================================
#
# Recent Cyrus versions can use the existing "lmtp" master.cf entry.
#
# Specify in cyrus.conf:
# lmtp cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4
#
# Specify in main.cf one or more of the following:
# mailbox_transport = lmtp:inet:localhost
# virtual_transport = lmtp:inet:localhost
#
# ====================================================================
#
# Cyrus 2.1.5 (Amos Gouaux)
# Also specify in main.cf: cyrus_destination_recipient_limit=1
#
#cyrus unix - n n - - pipe
# user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user}
#
# ====================================================================
# Old example of delivery via Cyrus.
#
#old-cyrus unix - n n - - pipe
# flags=R user=cyrus argv=/cyrus/bin/deliver -e -m ${extension} ${user}
#
# ====================================================================
#
# See the Postfix UUCP_README file for configuration details.
#
uucp unix - n n - - pipe
flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient)
#
# Other external delivery methods.
#
ifmail unix - n n - - pipe
flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient)
bsmtp unix - n n - - pipe
flags=Fq. user=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender $recipient
scalemail-backend unix - n n - 2 pipe
flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store ${nexthop} ${user} ${extension}
mailman unix - n n - - pipe
flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
${nexthop} ${user}
编辑dovecot-n：
$ sudo doveconf -n
# 2.3.4.1 (f79e8e7e4): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.4 ()
doveconf: Warning: NOTE: You can get a new clean config file with: doveconf -Pn > dovecot-new.conf
doveconf: Warning: Obsolete setting in /etc/dovecot/conf.d/10-ssl.conf:77: ssl_protocols has been replaced by ssl_min_protocol
# OS: Linux 4.19.97-v7+ armv7l Debian 10.3
# Hostname: mail.domain.com
auth_mechanisms = plain login
disable_plaintext_auth = no
mail_location = maildir:~/Maildir
mail_privileged_group = mail
namespace {
inbox = yes
location =
mailbox {
special_use = \Drafts
name = Drafts
}
mailbox {
special_use = \Junk
name = Junk
}
mailbox {
special_use = \Sent
name = Sent
}
mailbox {
special_use = \Sent
name = Sent Messages
}
mailbox {
special_use = \Trash
name = Trash
}
prefix =
name = inbox
}
passdb {
driver = pam
}
protocols = " imap"
service replication-notify-fifo {
name = aggregator
}
service anvil-auth-penalty {
name = anvil
}
service auth-worker {
name = auth-worker
}
service {
unix_listener {
group = postfix
mode = 0660
user = postfix
path = /var/spool/postfix/private/auth
}
name = auth
}
service config {
name = config
}
service dict-async {
name = dict-async
}
service dict {
name = dict
}
service login/proxy-notify {
name = director
}
service dns-client {
name = dns_client
}
service doveadm-server {
name = doveadm
}
service imap-hibernate {
name = imap-hibernate
}
service {
inet_listener {
port = 143
name = imap
}
inet_listener {
port = 993
ssl = yes
name = imaps
}
name = imap-login
}
service imap-urlauth {
name = imap-urlauth-login
}
service imap-urlauth-worker {
name = imap-urlauth-worker
}
service token-login/imap-urlauth {
name = imap-urlauth
}
service imap-master {
name = imap
}
service indexer-worker {
name = indexer-worker
}
service indexer {
name = indexer
}
service ipc {
name = ipc
}
service lmtp {
name = lmtp
}
service log-errors {
name = log
}
service old-stats-mail {
name = old-stats
}
service pop3 {
name = pop3-login
}
service login/pop3 {
name = pop3
}
service replicator-doveadm {
name = replicator
}
service stats-reader {
name = stats
}
service submission {
name = submission-login
}
service login/submission {
name = submission
}
ssl_cert = </etc/ssl/certs/cacert.pem
ssl_client_ca_dir = /etc/ssl/certs
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
submission_max_mail_size = 0
userdb {
driver = passwd
}
protocol lmtp {
service replication-notify-fifo {
name = aggregator
}
service anvil-auth-penalty {
name = anvil
}
service auth-worker {
name = auth-worker
}
service auth-client {
name = auth
}
service config {
name = config
}
service dict-async {
name = dict-async
}
service dict {
name = dict
}
service login/proxy-notify {
name = director
}
service dns-client {
name = dns_client
}
service doveadm-server {
name = doveadm
}
service imap-hibernate {
name = imap-hibernate
}
service imap {
name = imap-login
}
service imap-urlauth {
name = imap-urlauth-login
}
service imap-urlauth-worker {
name = imap-urlauth-worker
}
service token-login/imap-urlauth {
name = imap-urlauth
}
service imap-master {
name = imap
}
service indexer-worker {
name = indexer-worker
}
service indexer {
name = indexer
}
service ipc {
name = ipc
}
service lmtp {
name = lmtp
}
service log-errors {
name = log
}
service old-stats-mail {
name = old-stats
}
service pop3 {
name = pop3-login
}
service login/pop3 {
name = pop3
}
service replicator-doveadm {
name = replicator
}
service stats-reader {
name = stats
}
service submission {
name = submission-login
}
service login/submission {
name = submission
}
submission_max_mail_size = 0
}
protocol !indexer-worker {
service replication-notify-fifo {
name = aggregator
}
service anvil-auth-penalty {
name = anvil
}
service auth-worker {
name = auth-worker
}
service auth-client {
name = auth
}
service config {
name = config
}
service dict-async {
name = dict-async
}
service dict {
name = dict
}
service login/proxy-notify {
name = director
}
service dns-client {
name = dns_client
}
service doveadm-server {
name = doveadm
}
service imap-hibernate {
name = imap-hibernate
}
service imap {
name = imap-login
}
service imap-urlauth {
name = imap-urlauth-login
}
service imap-urlauth-worker {
name = imap-urlauth-worker
}
service token-login/imap-urlauth {
name = imap-urlauth
}
service imap-master {
name = imap
}
service indexer-worker {
name = indexer-worker
}
service indexer {
name = indexer
}
service ipc {
name = ipc
}
service lmtp {
name = lmtp
}
service log-errors {
name = log
}
service old-stats-mail {
name = old-stats
}
service pop3 {
name = pop3-login
}
service login/pop3 {
name = pop3
}
service replicator-doveadm {
name = replicator
}
service stats-reader {
name = stats
}
service submission {
name = submission-login
}
service login/submission {
name = submission
}
submission_max_mail_size = 0
}
protocol lda {
service replication-notify-fifo {
name = aggregator
}
service anvil-auth-penalty {
name = anvil
}
service auth-worker {
name = auth-worker
}
service auth-client {
name = auth
}
service config {
name = config
}
service dict-async {
name = dict-async
}
service dict {
name = dict
}
service login/proxy-notify {
name = director
}
service dns-client {
name = dns_client
}
service doveadm-server {
name = doveadm
}
service imap-hibernate {
name = imap-hibernate
}
service imap {
name = imap-login
}
service imap-urlauth {
name = imap-urlauth-login
}
service imap-urlauth-worker {
name = imap-urlauth-worker
}
service token-login/imap-urlauth {
name = imap-urlauth
}
service imap-master {
name = imap
}
service indexer-worker {
name = indexer-worker
}
service indexer {
name = indexer
}
service ipc {
name = ipc
}
service lmtp {
name = lmtp
}
service log-errors {
name = log
}
service old-stats-mail {
name = old-stats
}
service pop3 {
name = pop3-login
}
service login/pop3 {
name = pop3
}
service replicator-doveadm {
name = replicator
}
service stats-reader {
name = stats
}
service submission {
name = submission-login
}
service login/submission {
name = submission
}
submission_max_mail_size = 0
}
protocol imap {
service replication-notify-fifo {
name = aggregator
}
service anvil-auth-penalty {
name = anvil
}
service auth-worker {
name = auth-worker
}
service auth-client {
name = auth
}
service config {
name = config
}
service dict-async {
name = dict-async
}
service dict {
name = dict
}
service login/proxy-notify {
name = director
}
service dns-client {
name = dns_client
}
service doveadm-server {
name = doveadm
}
service imap-hibernate {
name = imap-hibernate
}
service imap {
name = imap-login
}
service imap-urlauth {
name = imap-urlauth-login
}
service imap-urlauth-worker {
name = imap-urlauth-worker
}
service token-login/imap-urlauth {
name = imap-urlauth
}
service imap-master {
name = imap
}
service indexer-worker {
name = indexer-worker
}
service indexer {
name = indexer
}
service ipc {
name = ipc
}
service lmtp {
name = lmtp
}
service log-errors {
name = log
}
service old-stats-mail {
name = old-stats
}
service pop3 {
name = pop3-login
}
service login/pop3 {
name = pop3
}
service replicator-doveadm {
name = replicator
}
service stats-reader {
name = stats
}
service submission {
name = submission-login
}
service login/submission {
name = submission
}
submission_max_mail_size = 0
我有域名，并通过 easydns 和 ddclient 获得动态 IP。不知道这是否有帮助。
如果您还需要其他东西，请告诉我。我相信互联网会回应我的祈祷。