hi,
I just installed Zimbra, have it up and working. I can receive email from most mail service, but yandex mails not receive (@yandex.com,yandex mail for domains service mails) and nothing in "/var/log/zimbra.log"

Jun 23 10:19:18 uye clamd[6473]: SelfCheck: Database status OK.
Jun 23 10:19:19 uye sshd[6635]: Accepted password for desktop from xx.xxx.xxx.xxx port xxxxx ssh2
Jun 23 10:19:55 uye zmconfigd[4332]: Fetching All configs
Jun 23 10:19:55 uye zmconfigd[4332]: All configs fetched in 0.04 seconds
Jun 23 10:19:56 uye zmconfigd[4332]: Watchdog: service antivirus status is OK.
Jun 23 10:19:56 uye zmconfigd[4332]: All rewrite threads completed in 0.00 sec
Jun 23 10:19:56 uye zmconfigd[4332]: All restarts completed in 0.00 sec
Jun 23 10:20:01 uye zimbramon[7412]: 7412:info: 2013-06-23 10:20:01, QUEUE: 0 0
Jun 23 10:20:56 uye zmconfigd[4332]: Fetching All configs
Jun 23 10:20:56 uye zmconfigd[4332]: All configs fetched in 0.04 seconds
Jun 23 10:20:57 uye zmconfigd[4332]: Watchdog: service antivirus status is OK.
Jun 23 10:20:57 uye zmconfigd[4332]: All rewrite threads completed in 0.00 sec
Jun 23 10:20:57 uye zmconfigd[4332]: All restarts completed in 0.00 sec
Jun 23 10:21:57 uye zmconfigd[4332]: Fetching All configs
Jun 23 10:21:57 uye zmconfigd[4332]: All configs fetched in 0.04 seconds
Jun 23 10:21:58 uye zmconfigd[4332]: Watchdog: service antivirus status is OK.
Jun 23 10:21:58 uye zmconfigd[4332]: All rewrite threads completed in 0.00 sec
Jun 23 10:21:58 uye zmconfigd[4332]: All restarts completed in 0.00 sec
Jun 23 10:22:58 uye zmconfigd[4332]: Fetching All configs
Jun 23 10:22:58 uye zmconfigd[4332]: All configs fetched in 0.04 seconds
Jun 23 10:22:59 uye zmconfigd[4332]: Watchdog: service antivirus status is OK.
Jun 23 10:22:59 uye zmconfigd[4332]: All rewrite threads completed in 0.00 sec
Jun 23 10:22:59 uye zmconfigd[4332]: All restarts completed in 0.00 sec
Jun 23 10:23:59 uye zmconfigd[4332]: Fetching All configs
Jun 23 10:24:00 uye zmconfigd[4332]: All configs fetched in 0.04 seconds
Jun 23 10:24:01 uye zmconfigd[4332]: Watchdog: service antivirus status is OK.
Jun 23 10:24:01 uye zmconfigd[4332]: All rewrite threads completed in 0.00 sec
Jun 23 10:24:01 uye zmconfigd[4332]: All restarts completed in 0.00 sec