I am using ubuntu 10.04 on a VPS. Without enabling UFW everythign works fine - imap using port 143. And sends emails using smtp port 587.
However, when I turn on UFW a lot of problems are encountered. Email fails, ssh log ins are very slow, and dig command does not work - it times out. Also, Apt-get install does not work.
ufw status verbose returns :
Status: active
Logging: on (low)
Default: deny (incoming), allow (outgoing)
New profiles: skip
To Action From
-- ------ ----
Anywhere ALLOW IN my.ip.address.0
Anywhere ALLOW IN my.ip.address.0/24
80 ALLOW IN Anywhere
443 ALLOW IN Anywhere
25/tcp ALLOW IN Anywhere
587 ALLOW IN Anywhere
143 ALLOW IN Anywhere
993 ALLOW IN Anywhere
465/tcp ALLOW IN Anywhere
587/tcp ALLOW IN Anywhere
143/tcp ALLOW IN Anywhere
587/udp ALLOW IN Anywhere
53/tcp ALLOW IN Anywhere
53/udp ALLOW IN Anywhere
68/udp ALLOW IN Anywhere
67/udp ALLOW IN Anywhere
53 ALLOW IN Anywhere
53 ALLOW OUT Anywhere
53/tcp ALLOW OUT Anywhere
53/udp ALLOW OUT Anywhere
In my syslog I get the following (and same again with port 53 allowed):
Aug 25 13:55:31 VPS##-###-## postfix/smtpd[23611]: NOQUEUE: reject: RCPT from unknown[ip.address.here.0]: 450 4.1.8 <[email protected]>: Sender address rejected: Domain not found; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<mail-qy0-f179.google.com>
/var/log/messages
does not seem to contain anything relevant even though ufw logging is on