Looks like the Amavis was not running, I cannot find the /etc/amavisd.conf file, the file doesn't not exist.
So, when I did the "service amavis restart" the terminal returned
"Stopping amavisd: (not running).
Starting amavisd: amavisd-new."
Now with it running, I tried to send another e-mail, but don't works again.
/var/log/mail.log
Mar 21 13:52:54 mx postfix/smtp[3099]: 5B1EA610F8: to=<teste@vereadordemirai.com.br>, relay=127.0.0.1[127.0.0.1]:10024, delay=18379, delays=18372/0.02/0.01/7.2, dsn=4.5.0, status=deferred (host 127.0.0.1[127.0.0.1] said: 451 4.5.0 Error in processing, id=03079-01, virus_scan FAILED: AV: ALL VIRUS SCANNERS FAILED (in reply to end of DATA command))
Mar 21 13:52:55 mx amavis[3078]: (03078-02) (!!)file(1) utility (/usr/bin/file) FAILED: run_command: can't fork: Cannot allocate memory at /usr/sbin/amavisd-new line 3081.
Mar 21 13:52:56 mx amavis[3078]: (03078-02) (!)ClamAV-clamd: Can't connect to UNIX socket /tmp/clamd.socket: No such file or directory, retrying (2)
Mar 21 13:53:02 mx amavis[3078]: (03078-02) (!)ClamAV-clamd av-scanner FAILED: run_av error: Too many retries to talk to /tmp/clamd.socket (Can't connect to UNIX socket /tmp/clamd.socket: No such file or directory) at (eval 102) line 375.\n
Mar 21 13:53:02 mx amavis[3078]: (03078-02) (!!)WARN: all primary virus scanners failed, considering backups
Mar 21 13:53:02 mx amavis[3078]: (03078-02) (!)run_av (ClamAV-clamscan): run_command: can't fork: Cannot allocate memory at /usr/sbin/amavisd-new line 3081.
Mar 21 13:53:02 mx amavis[3078]: (03078-02) (!)ClamAV-clamscan av-scanner FAILED: /usr/bin/clamscan run_command: can't fork: Cannot allocate memory at /usr/sbin/amavisd-new line 3081. at (eval 102) line 596.
Mar 21 13:53:02 mx amavis[3078]: (03078-02) (!!)TROUBLE in check_mail: virus_scan FAILED: AV: ALL VIRUS SCANNERS FAILED
Mar 21 13:53:02 mx amavis[3078]: (03078-02) (!)PRESERVING EVIDENCE in /var/lib/amavis/tmp/amavis-20130321T135254-03078
Mar 21 13:53:02 mx postfix/smtp[3101]: 96B18611AB: to=<jacksonbenete@gmail.com>, relay=127.0.0.1[127.0.0.1]:10024, delay=12, delays=1.1/4.3/0.02/7.1, dsn=4.5.0, status=deferred (host 127.0.0.1[127.0.0.1] said: 451 4.5.0 Error in processing, id=03078-02, virus_scan FAILED: AV: ALL VIRUS SCANNERS FAILED (in reply to end of DATA command))
/var/log/dovecot.log
Mar 21 13:52:54 imap-login: Info: Login: user=<teste@vereadordemirai.com.br>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=3131, secured
Mar 21 13:52:54 imap(teste@vereadordemirai.com.br): Info: Disconnected: Logged out bytes=303/1443
Mar 21 13:52:54 imap-login: Info: Login: user=<teste@vereadordemirai.com.br>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=3133, secured
Mar 21 13:52:54 imap(teste@vereadordemirai.com.br): Info: Disconnected: Logged out bytes=233/876
Mar 21 13:53:54 imap-login: Info: Login: user=<teste@vereadordemirai.com.br>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=3137, secured
Mar 21 13:53:54 imap(teste@vereadordemirai.com.br): Info: Disconnected: Logged out bytes=352/2089
Mar 21 13:54:55 imap-login: Info: Login: user=<teste@vereadordemirai.com.br>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=3139, secured
Mar 21 13:54:55 imap(teste@vereadordemirai.com.br): Info: Disconnected: Logged out bytes=352/2089
Mar 21 13:55:54 imap-login: Info: Login: user=<teste@vereadordemirai.com.br>, method=PLAIN, rip=127.0.0.1, lip=127.0.0.1, mpid=3142, secured
Mar 21 13:55:54 imap(teste@vereadordemirai.com.br): Info: Disconnected: Logged out bytes=352/2089
/var/log/sieve.log
Mar 21 08:06:02 lda(jackson): Fatal: setgid(1001(vmail) from mail_gid setting) failed with euid=1000(jackson), gid=1000(jackson), egid=1000(jackson): Operation not permitted (This binary should probably be called with process group set to 1001(vmail) instead of 1000(jackson))
Mar 21 08:06:02 lda(postmaster@vereadordemirai.com.br): Info: msgid=<20130321110602.ABFA861183@mx.vereadordemirai.com.br>: saved mail to INBOX
Mar 21 08:41:02 lda(postmaster@vereadordemirai.com.br): Info: msgid=<20130321113407.05CB36127E@mx.vereadordemirai.com.br>: saved mail to INBOX
Mar 21 08:43:14 lda(postmaster@vereadordemirai.com.br): Info: msgid=<20130321114257.03099612BD@mx.vereadordemirai.com.br>: saved mail to INBOX
Mar 21 09:12:46 lda(jackson): Fatal: setgid(1001(vmail) from mail_gid setting) failed with euid=1000(jackson), gid=1000(jackson), egid=1000(jackson): Operation not permitted (This binary should probably be called with process group set to 1001(vmail) instead of 1000(jackson))
Mar 21 10:22:46 lda(jackson): Fatal: setgid(1001(vmail) from mail_gid setting) failed with euid=1000(jackson), gid=1000(jackson), egid=1000(jackson): Operation not permitted (This binary should probably be called with process group set to 1001(vmail) instead of 1000(jackson))
Mar 21 11:22:47 lda(teste@vereadordemirai.com.br): Info: msgid=<20130321142247.25EF161181@mx.vereadordemirai.com.br>: saved mail to INBOX
Mar 21 11:32:47 lda(jackson): Fatal: setgid(1001(vmail) from mail_gid setting) failed with euid=1000(jackson), gid=1000(jackson), egid=1000(jackson): Operation not permitted (This binary should probably be called with process group set to 1001(vmail) instead of 1000(jackson))
Mar 21 12:06:06 lda(jackson): Fatal: setgid(1001(vmail) from mail_gid setting) failed with euid=1000(jackson), gid=1000(jackson), egid=1000(jackson): Operation not permitted (This binary should probably be called with process group set to 1001(vmail) instead of 1000(jackson))
Mar 21 13:12:47 lda(jackson): Fatal: setgid(1001(vmail) from mail_gid setting) failed with euid=1000(jackson), gid=1000(jackson), egid=1000(jackson): Operation not permitted (This binary should probably be called with process group set to 1001(vmail) instead of 1000(jackson))