2017-08-02 19:22:16 -05:00
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< title > Fixes you need after upgrading Debian from 8 to 9< / title >
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// < a href = "./index.html" > Document Index< / a > < / div > < h1 id = "fixes-you-need-after-upgrading-debian-from-8-to-9" > Fixes you need after upgrading Debian from 8 to 9< / h1 >
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< li > < a href = "#fixes-you-need-after-upgrading-debian-from-8-to-9" > Fixes you need after upgrading Debian from 8 to 9< / a > < ul >
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< li > < a href = "#postfix" > Postfix< / a > < / li >
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< li > < a href = "#dovecot" > Dovecot< / a > < / li >
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< li > < a href = "#fail2ban" > Fail2ban< / a > < / li >
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< h2 id = "postfix" > Postfix< / h2 >
< p > Run commands:< / p >
< pre > < code > # Backup files
cp /etc/postfix/main.cf /etc/postfix/main.cf.bak
cp /etc/postfix/master.cf /etc/postfix/master.cf
# Update main.cf and master.cf
postconf -e daemon_directory='/usr/lib/postfix/sbin'
postconf -e shlib_directory='/usr/lib/postfix'
postconf -e compatibility_level=2
for i in $(postconf -Mf | grep '^[0-9a-zA-Z]' | awk '{print $1" /" $2" /chroot=n" }'); do postconf -F $i; done
< / code > < / pre >
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< li > Incorrect < code > daemon_directory< / code > causes Postfix cannot start.< / li >
< li > Incorrect < code > shlib_directory< / code > causes Postfix cannot find pcre/mysql/pgsql/ldap modules.< / li >
< li > Debian 8 ships Postfix 2.x, but Debian 9 ships Postfix 3.x, we need to disable compatible mode.< / li >
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< h2 id = "dovecot" > Dovecot< / h2 >
< p > Please remove < code > !SSLv2< / code > from parameter < code > ssl_protocols< / code > , and restart Dovecot service:< / p >
< pre > < code > ssl_protocols = !SSLv3
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< / code > < / pre >
< h2 id = "fail2ban" > Fail2ban< / h2 >
< p > There's a duplicate parameter in file < code > /etc/fail2ban/jail.conf< / code > , under section
< code > [pam-generic]< / code > like below:< / p >
< pre > < code > [pam-generic]
...
port = all
...
port = anyport
< / code > < / pre >
< p > Comment out < code > port = anyport< / code > and restart fail2ban service.< / p > < div class = "footer" >
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