postfix can't deliver mails to cyrus

[Denny Schierz]

hi,

since last weekend, i have bad problems   . My postfix from debian woody
can't deliver anymore to cyrus 2.1.13
The log from Postfix:

Aug 15 14:02:53 router postfix/pipe[29909]: A26F512C44:
to=<srk0005 at srk-systemtechnik.dyndns.org>, relay=cyrus, delay=561,
status=deferred (Delivery failed: Resource temporarily unavailable)
Aug 15 14:02:53 router postfix/pipe[29905]: warning: fork: Resource
temporarily unavailable
Aug 15 14:02:53 router postfix/pipe[29905]: 89A4F12C50:
to=<srk0015 at srk-systemtechnik.dyndns.org>, relay=cyrus, delay=1681,
status=deferred (Delivery failed: Resource temporarily unavailable)
Aug 15 14:02:53 router postfix/qmgr[28627]: C7ABE12C40:
from=<cuall at gmx.de>,
size=351, nrcpt=1 (queue active)
Aug 15 14:02:53 router postfix/pipe[29909]: warning: fork: Resource
temporarily unavailable
Aug 15 14:02:53 router postfix/pipe[29909]: C7ABE12C40:
to=<dyn0001 at srk-systemtechnik.dyndns.org>, relay=cyrus, delay=1408,
status=deferred (Delivery failed: Resource temporarily unavailable)

i can login into cyrus and read mails, i can send mails over postfix,
but i
can't send mails to cyrus. I need urgency help :-/
i have also cyrus debug:

Aug 15 10:16:48 router imapd[4921]: login: localhost[127.0.0.1] admin
plaintext
Aug 15 10:16:49 router master[1958]: process 4807 exited, status 0
Aug 15 10:16:52 router imapd[4869]: Could not shut down filedescriptor
0:
Transport endpoint is not connected
Aug 15 10:16:52 router imapd[4869]: Could not shut down filedescriptor
1:
Transport endpoint is not connected
Aug 15 10:16:52 router imapd[4869]: Could not shut down filedescriptor
2:
Transport endpoint is not connected
Aug 15 10:17:48 router master[1958]: process 4921 exited, status 0
Aug 15 10:17:48 router master[1958]: process 4918 exited, status 0
Aug 15 10:17:50 router master[5033]: about to exec /usr/cyrus/bin/imapd
Aug 15 10:17:50 router imap[5033]: executed
Aug 15 10:17:50 router imapd[5033]: accepted connection
Aug 15 10:17:50 router imapd[5033]: login: localhost[127.0.0.1] dyn0001
plaintext
Aug 15 10:17:50 router imapd[5033]: seen_db: user dyn0001 opened
/var/imap/user/d/dyn0001.seen
Aug 15 10:17:50 router imapd[5033]: open: user dyn0001 opened INBOX
Aug 15 10:17:50 router master[5035]: about to exec /usr/cyrus/bin/imapd
Aug 15 10:17:50 router imap[5035]: executed
Aug 15 10:17:50 router imapd[5035]: accepted connection
Aug 15 10:17:50 router imapd[5035]: login: localhost[127.0.0.1] admin
plaintext
Aug 15 10:17:52 router master[1958]: process 4869 exited, status 0
Aug 15 10:18:50 router master[1958]: process 5035 exited, status 0
Aug 15 10:18:50 router master[1958]: process 5033 exited, status 0
Aug 15 10:18:51 router master[5148]: about to exec /usr/cyrus/bin/imapd

there are no more lines like:

Aug 15 09:52:10 router master[2161]: about to exec /usr/cyrus/bin/lmtpd
Aug 15 09:52:10 router lmtpd[2157]: lmtp connection preauth'd as postman
Aug 15 09:52:10 router lmtpunix[2161]: executed
Aug 15 09:52:10 router lmtpd[2157]: duplicate_check:
<200308150627.h7F6RQQ04856 at mailgate5.cinetic.de> user.srk0015         0
Aug 15 09:52:10 router lmtpd[2161]: accepted connection
Aug 15 09:52:10 router lmtpd[2157]: mystore: starting txn 2147483671
Aug 15 09:52:10 router lmtpd[2161]: lmtp connection preauth'd as postman
Aug 15 09:52:10 router lmtpd[2157]: mystore: committing txn 2147483671
Aug 15 09:52:10 router master[2162]: about to exec /usr/cyrus/bin/lmtpd
Aug 15 09:52:10 router lmtpd[2157]: duplicate_mark:
<200308150627.h7F6RQQ04856 at mailgate5.cinetic.de> user.srk0015         10
60933930

but why? i changed nothing in the configs

any suggestions?