I was successfully running Zimbra. I had a firewall issue and it took me a while to get it rebuilt. Now that I have that running I'm having an issue where I cannot send messages. I can receive fine. Prior to the firewall going down I could send and receive.

I'm not getting any errors or bouncebacks.

Here are some stats:

zimbra@mail:/root$ zmcontrol -v
Release 8.0.5.GA.5839.UBUNTU12.64 UBUNTU12_64 FOSS edition.

zimbra@mail:/root$ cat /etc/hosts
127.0.0.1 localhost.localdomain localhost
192.168.1.13 mail.mydomain.com mail

zimbra@mail:/root$ cat /etc/resolv.conf
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
# DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
nameserver 127.0.0.1
search mydomain.local

zimbra@mail:/root$ dig mydomain.com mx

; <<>> DiG 9.8.1-P1 <<>> mydomain.com mx
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 65145
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mydomain.com. IN MX

;; ANSWER SECTION:
mydomain.com. 1800 IN MX 10 mail.mydomain.com.

;; Query time: 92 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue Apr 15 15:47:24 2014
;; MSG SIZE rcvd: 52

zimbra@mail:/root$ dig mydomain.com any

; <<>> DiG 9.8.1-P1 <<>> mydomain.com any
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61552
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mydomain.com. IN ANY

;; ANSWER SECTION:
mydomain.com. 1780 IN MX 10 mail.mydomain.com.

;; Query time: 22 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Tue Apr 15 15:47:45 2014
;; MSG SIZE rcvd: 52

zimbra@mail:/root$ host `hostname`
mail has address 192.168.1.13

Thanks,
Mike