warning: fork: Resource temporarily ... : Cyrus-Mysql-postfix

hi,

i had a running web-cyradm (Postfix-Mysql-Cyrus) installation working for
months, but since yesterday it is not working anymore, without any changes

i'm using postfix 1.x (from woody) and cyrus imap 2.1.14 . i have this
output, from Postfix:

Aug 15 13:50:03 router postfix/qmgr[13578]: C7ABE12C40: from=<cuall@gmx.de>,
size=351, nrcpt=1 (queue active)
Aug 15 13:50:03 router postfix/qmgr[13578]: A26F512C44:
from=<markovic@imail.de>, size=2752, nrcpt=1 (queue active)
Aug 15 13:50:03 router postfix/qmgr[13578]: 89A4F12C50:
from=<info@hykom.de>,
size=149022, nrcpt=1 (queue active)
Aug 15 13:50:03 router postfix/pipe[20881]: warning: fork: Resource
temporarily
unavailable
Aug 15 13:50:03 router postfix/pipe[20882]: warning: fork: Resource
temporarily
unavailable
Aug 15 13:50:03 router postfix/pipe[20881]: A26F512C44: to=<srk0005@srk-
systemtechnik.dyndns.org>, relay=cyrus, delay=-209, status=deferred
(Delivery
failed: Resource temporarily unavailable)
Aug 15 13:50:03 router postfix/pipe[20882]: C7ABE12C40: to=<dyn0001@srk-
systemtechnik.dyndns.org>, relay=cyrus, delay=638, status=deferred (Delivery
failed: Resource temporarily unavailable)
Aug 15 13:50:03 router postfix/pipe[20885]: warning: fork: Resource
temporarily
unavailable

I added in the master.cf line smtp and lmtp -v switch. But it doesn't say
me,
why he can't deliver this mails.

Cyrus as itself, seems working, i can login and read mails. Postfix can send
mails but not deliver to cyrus.



i found something more info. Normal you have this lines in the log:

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@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@mailgate5.cinetic.de> user.srk0015 10
60933930

but, now, there is nothing with lmtpd.

my master.cf:

cyrus unix - n n - - pipe
flags= user=cyrus argv=/usr/cyrus/bin/deliver -r ${sender} -m ${extension}
${user}


main.cf:

mailbox_transport = cyrus