Postfix 451 4.3.0 Error: queue file write error

Nov  1 15:13:54 mail postfix/smtpd[376]: connect from mx01.From_Domain.ru[46.214.150.13]
Nov  1 15:13:54 mail postfix/smtpd[376]: Anonymous TLS connection established from mx01.From_Domain.ru[46.214.150.13]: TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)
Nov  1 15:13:54 mail postfix/smtpd[376]: CC7E78AC: client=mx01.From_Domain.ru[46.214.150.13]
Nov  1 15:13:54 mail postfix/cleanup[380]: warning: CC7E78AC: trace service failure
Nov  1 15:13:54 mail postfix/cleanup[380]: warning: CC7E78AC: trace logfile update error
Nov  1 15:14:25 mail postfix/cleanup[380]: 991D58AC: message-id=<20161101121425.991D58AC@mail.mydomain.ru>
Nov  1 15:14:25 mail postfix/smtpd[376]: disconnect from mx01.From_Domain.ru[46.214.150.13]
Nov  1 15:14:25 mail postfix/qmgr[168]: 991D58AC: from=<double-bounce@mail.mydomain.ru>, size=1346, nrcpt=1 (queue active)
Nov  1 15:14:25 mail postfix/lmtp[381]: 991D58AC: to=<ldap@mydomain.ru>, orig_to=<postmaster>, relay=mail.mydomain.ru[/var/run/dspam/postfix], delay=0.25, delays=0.04/0/0/0.21, dsn=2.6.0, status=sent (250 2.6.0 <ldap@mydomain.ru> Message accepted f$
Nov  1 15:14:25 mail postfix/qmgr[168]: 991D58AC: removed

Out: 220 mail.mydomain.ru ESMTP Postfix
 In:  EHLO mx01.From_Domain.ru
 Out: 250-mail.mydomain.ru
 Out: 250-PIPELINING
 Out: 250-SIZE 104857600
 Out: 250-ETRN
 Out: 250-STARTTLS
 Out: 250-ENHANCEDSTATUSCODES
 Out: 250-8BITMIME
 Out: 250 DSN
 In:  STARTTLS
 Out: 220 2.0.0 Ready to start TLS
 In:  EHLO mx01.From_Domain.ru
 Out: 250-mail.mydomain.ru
 Out: 250-PIPELINING
 Out: 250-SIZE 104857600
 Out: 250-ETRN
 Out: 250-AUTH PLAIN
 Out: 250-ENHANCEDSTATUSCODES
 Out: 250-8BITMIME
 Out: 250 DSN
 In:  MAIL From:<From_Man@city.From_Domain.RU> SIZE=1915154
 Out: 250 2.1.0 Ok
 In:  RCPT To:<director@mydomain.ru> NOTIFY=SUCCESS,FAILURE,DELAY
 Out: 250 2.1.5 Ok
 In:  RCPT To:<info@mydomain.ru> NOTIFY=SUCCESS,FAILURE,DELAY
 Out: 250 2.1.5 Ok
 In:  DATA
 Out: 354 End data with <CR><LF>.<CR><LF>
 Out: 451 4.3.0 Error: queue file write error
 In:  QUIT
 Out: 221 2.0.0 Bye

-o smtpd_proxy_timeout=400s

root@mail:/var/log# postconf smtpd_proxy_timeout
smtpd_proxy_timeout = 100s