i have been seccefully install zimbra zcs on proxmox under openVZ. Zimbra work 1 month very well, but shit happens..

Yestarday zimbra stop send mail to some external server. After analyze logs i found:
Dec 17 18:59:37 zimbra postfix/smtp[29651]: C3F0A12023D: to=<gad****ess@pochta.ru>, relay=none, delay=108131, delays=108071/0.01/60/0, dsn=4.4.1, status=deferred (connect to pochta.ru[62.141.94.20]:25: Connection timed out)

but mx record for pochta.ru another IP :
root@zimbra:/var/log# dig mx pochta.ru
...
;; QUESTION SECTION:
;pochta.ru. IN MX

;; ANSWER SECTION:
pochta.ru. 150 IN MX 5 mx.pochta.ru.

;; ADDITIONAL SECTION:
mx.pochta.ru. 150 IN A 62.141.94.154
..

but A record for pochta.ru is 62.141.94.20.

same situation with gmail and any domain does not match A record and MX
Dec 17 19:00:07 zimbra postfix/smtp[2116]: connect to gmail.com[74.125.77.18]:25: Connection timed out
Dec 17 19:00:07 zimbra postfix/smtp[2116]: 41A21C4389: to=<ro******enko@gmail.com>, relay=none, delay=175947, delays=175857/0.01/90/0, dsn=4.4.1, status=deferred (connect to gmail.com[74.125.77.18]:25: Connection timed out)

root@zimbra:/var/log# dig gmail.com
...
;; ANSWER SECTION:
gmail.com. 25 IN A 74.125.77.83
gmail.com. 25 IN A 74.125.77.18
gmail.com. 25 IN A 74.125.77.19


root@zimbra:/var/log# dig mx gmail.com
;; ANSWER SECTION:
gmail.com. 3600 IN MX 10 alt1.gmail-smtp-in.l.google.com.
gmail.com. 3600 IN MX 20 alt2.gmail-smtp-in.l.google.com.
gmail.com. 3600 IN MX 40 alt4.gmail-smtp-in.l.google.com.
gmail.com. 3600 IN MX 5 gmail-smtp-in.l.google.com.
gmail.com. 3600 IN MX 30 alt3.gmail-smtp-in.l.google.com.



I tryed to migrate zimbra from openVZ to KVM, but have same problem. Sorry, for my bad english...