Apple Mail server 10.4.8 error

Hi Guys I have a mail server thats recieving mail but not delivering it it may be a corrupt database or a dogy clam av file any one any ideas logs are below, i have already rebuilt the mail database mail access Apr 10 09:14:37 XServe-Designit lmtpunix[23182]: DBERROR: critical database situation Apr 10 09:14:38 XServe-Designit lmtpunix[23190]: DBERROR: critical database situation Apr 10 09:14:38 XServe-Designit pop3[23191]: DBERROR: critical database situation pop log Apr 10 09:14:37 XServe-Designit pop3[23177]: DBERROR: critical database situation Apr 10 09:14:37 XServe-Designit pop3[23183]: DBERROR: critical database situation Apr 10 09:14:38 XServe-Designit pop3[23191]: DBERROR: critical database situation smtp log Apr 10 17:51:06 XServe-Designit postfix/smtp[13372]: 1032D200244: to=, relay=127.0.0.1[127.0.0.1], delay=1, status=deferred (host 127.0.0.1[127.0.0.1] said: 451-4.5.0 Error in processing, id=13040-01, virus_scan FAILED: virus_scan: ALL VIRUS SCANNERS FAILED: Clam Antivirus - clamscan av-scanner FAILED: /usr/bin/clamscan unexpected exit 50, output="LibClamAV Warning: ******************************************************** 451-4.5.0 LibClamAV Warning: *** This version of the ClamAV engine is outdated. *** 451-4.5.0 LibClamAV Warning: *** DON'T PANIC! Read http://www.clamav.net/faq.html *** 451-4.5.0 LibClamAV Warning: ******************************************************** 451-4.5.0 LibClamAV Error: Can't load /private/var/clamav/main.cvd: MD5 verification error 451 4.5.0 ERROR: MD5 verification error" at (eval 37) line 408. (in reply to end of DATA command)) virus database update log -------------------------------------- freshclam running in foregroundfreshclam daemon 0.88.5 (OS: darwin8.0, ARCH: ppc, CPU: powerpc) ClamAV update process started at Tue Apr 10 15:10:09 2007 SECURITY WARNING: NO SUPPORT FOR DIGITAL SIGNATURES See the FAQ at http://www.clamav.net/faq.html for an explanation. ERROR: Can't query current.cvd.clamav.net WARNING: Invalid DNS reply. Falling back to HTTP mode. ERROR: Can't get information about database.clamav.net: Host not found ERROR: No servers could be reached. Giving up Trying again in 5 secs... ClamAV update process started at Tue Apr 10 15:10:15 2007 SECURITY WARNING: NO SUPPORT FOR DIGITAL SIGNATURES See the FAQ at http://www.clamav.net/faq.html for an explanation. WARNING: Your ClamAV installation is OUTDATED! WARNING: Local version: 0.88.5 Recommended version: 0.90.1 DON'T PANIC! Read http://www.clamav.net/faq.html main.cvd is up to date (version: 42, sigs: 83951, f-level: 10, builder: tkojm) WARNING: Your ClamAV installation is OUTDATED! WARNING: Current functionality level = 9, recommended = 10 DON'T PANIC! Read http://www.clamav.net/faq.html daily.cvd is up to date (version: 3061, sigs: 23868, f-level: 14, builder: sven) WARNING: Your ClamAV installation is OUTDATED! WARNING: Current functionality level = 9, recommended = 14 DON'T PANIC! Read http://www.clamav.net/faq.html virus scanning -> Apr 10 17:51:05 XServe-Designit.local /usr/bin/amavisd[13040]: (13040-01) p001 1 Content-Type: text/plain, size: 1 B, name: Apr 10 17:51:05 XServe-Designit.local /usr/bin/amavisd[13040]: (13040-01) WARN: all primary virus scanners failed, considering backups Apr 10 17:51:06 XServe-Designit.local /usr/bin/amavisd[13040]: (13040-01) Clam Antivirus - clamscan av-scanner FAILED: /usr/bin/clamscan unexpected exit 50, output="LibClamAV Warning: ********************************************************\nLibClamAV Warning: *** This version of the ClamAV engine is outdated. ***\nLibClamAV Warning: *** DON'T PANIC! Read http://www.clamav.net/faq.html ***\nLibClamAV Warning: ********************************************************\nLibClamAV Error: Can't load /private/var/clamav/main.cvd: MD5 verification error\nERROR: MD5 verification error" at (eval 37) line 408. Apr 10 17:51:06 XServe-Designit.local /usr/bin/amavisd[13040]: (13040-01) TROUBLE in check_mail: virus_scan FAILED: virus_scan: ALL VIRUS SCANNERS FAILED: Clam Antivirus - clamscan av-scanner FAILED: /usr/bin/clamscan unexpected exit 50, output="LibClamAV Warning: ********************************************************\nLibClamAV Warning: *** This version of the ClamAV engine is outdated. ***\nLibClamAV Warning: *** DON'T PANIC! Read http://www.clamav.net/faq.html ***\nLibClamAV Warning: ********************************************************\nLibClamAV Error: Can't load /private/var/clamav/main.cvd: MD5 verification error\nERROR: MD5 verification error" at (eval 37) line 408. Apr 10 17:51:06 XServe-Designit.local /usr/bin/amavisd[13040]: (13040-01) PRESERVING EVIDENCE in /var/amavis/amavis-20070410T175105-13040 Apr 10 17:51:06 XServe-Designit.local /usr/bin/amavisd[13040]: (13040-01) TIMING [total 1588 ms] - SMTP EHLO: 30 (2%), SMTP pre-MAIL: 3 (0%), mkdir tempdir: 148 (9%), create email.txt: 2 (0%), SMTP pre-DATA-flush: 7 (0%), SMTP DATA: 2 (0%), body_hash: 2 (0%), mkdir parts: 2 (0%), mime_decode: 44 (3%), get-file-type1: 62 (4%), parts_decode: 1 (0%), AV-scan-1: 1279 (81%), rundown: 5 (0%)