Re: Re: qmail-spawn_unable_to_fork._
Hi Henning, thanks for your inputs >> >> I am getting qmail-spawn_unable_to_fork._ error on my qmail server > >This looks like a ressource limit issue. man ulimit, upper -n and -p. > I had been monitoring all the resources very closely ... the ulimit is unlimited ... More oftenly this problem occur due to exceeding max processes ..we are not crossing 150 process where as limits of process is 512 on Redhat linux .. we discussed this problem with developers and seems to be because Qmail not closing connection with LDAP server on port 389 cleanly .. hence we were seraching if any one has faced/fixed this problem ... any further inputs will be welcome ... thanks and regards Himanshu Kulkarni B202, Nirmal Tower, Mira Road (E), Dist. Thane Pin 401107, Maharashtra India Ph. 91 22 8110195 --- Keeping in touch keeps friendship growing ---
qmail-spawn_unable_to_fork._
Hi All I am getting qmail-spawn_unable_to_fork._ error on my qmail server ..which is running on Linux 2.2.12-20 we are user IBM LDAP Server which is running on a different RS6000 server with AIX as operating system . I serched thro' archieves of mailing list for this error. These mails suggest that this is error on Linux server However on mail server I have seen at any point of time the netstat shows me almost 100 connections with LDAP server in "TIME_WAIT" state ... against 10 odd connections in established state ... that means qmail server is unable to close the connection with LDAP server ... I am not getting any errors in error messages of Linux and in the maillog I am getting only above mentioned error ... i.e. qmail-spawn_unable_to_fork._ regards Himanshu Himanshu Kulkarni B202, Nirmal Tower, Mira Road (E), Dist. Thane Pin 401107, Maharashtra India Ph. 91 22 8110195 --- Keeping in touch keeps friendship growing ---
Re: Concurrency connections
hi we are using Qmail 1.03 with LDAP ... and we have applied LDAP patch ... i am now getting the "deferral:qmail-spawn_unabme_to_fork_(#4.3.0)" ... very frequently also on Linux 7.0 we are getting error "bash: fork: Resource temporarily unavailable" .. the error message in maillog file is Jul 25 09:50:23 mummail3 qmail: 996034823.354251 delivery 23: deferral: qmail-spawn_unable_to_fork._(#4.3.0) Jul 25 09:50:23 mummail3 qmail: 996034823.370976 status: local 0/35 remote 21/200 Jul 25 09:50:23 mummail3 qmail: 996034823.387715 delivery 24: deferral: qmail-spawn_unable_to_fork._(#4.3.0)/ Jul 25 09:50:23 mummail3 qmail: 996034823.404424 status: local 0/35 remote 20/200 On Linux server while checking the resources it is observed that Qmail is unable to close the TCP connection in the output of netstat command it is observed that at any point of time almost 100 connections are in "TIME_WAIT" state against 10 in ESTABLISHED state I am attaching part of the netstat command out put bash-2.04# netstat |more Active Internet connections (w/o servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 mummail3.isp.:smtp 192.168.100.5:3331 TIME_WAIT tcp 0 0 mummail3.isp.:smtp 192.168.100.5:3330 TIME_WAIT tcp 0 0 mummail3.isp.:pop3 203.124.240.10:1513 TIME_WAIT tcp 0 0 mummail3.isp.:pop3 192.168.100.88:1087 TIME_WAIT We are using IBM LDAP is installed on AIX. After discussing with IBM, they have concluded that the problem is due to Qmail failing to close its connection with LDAP cleanly. any help on this is wel come ... thanks and regards Himanshu
Concurrency connections
Title: Blank Hi We are running Qmail 1.03 with tcpserver on Linux 7.0 server. On this server I tried sending approximately to 80K mails to all our subscribers. For subscribers we are running ezmlm mail list. While transferring mail we were getting error "deferral:qmail-spawn_unabme_to_fork_(#4.3.0)" ... I thought we may be running short of Server resources, hence I checked the resources ... I had almost 129MB of RAM free and CPU utilization was as low as 12% ... also nms was showing ethernet card utilization as low as 4mbps (100Mbps ethernet card) when I changed "control/concurrencyremote" to "15" I could resolve the above mentioned problem , I searched on net and I could find one patch for concurrency connections ... however that patch is not required when I am running Qmail with LDAP any other suggestion or patch you can suggest ...?? Thanks and Regards Himanshu Kulkarni TATA Internet Services Limited Mumbai, India. Make the Smart Choice. Drop in at www.tatanova.com
Re: Stopping POP3 from certain users
John wrote: So how can I stop the user 'cs' from downloading via POP3? (at the moment,they are the only account using IMAP; although this may change in thefuture) We are setting an attribut account-status=nopop in LDAP for disabling POP access to users . Make the Smart Choice. Drop in at www.tatanova.com
