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I have recently installed PowerMTA server on CentOS 6, every prerequisite was installed according to Document and License was entered in correctly configuration file was also correctly setup in /etc/pmta/config but unable to start pmta service and getting this error in logs,
[root@mail ~]# pmtad --debug
Host names: mail.fFd3EDBc6dDfcbe1Bac1.com [127.0.0.1] [x.x.x.x] localhost.ec2.internal localhost
Domain suffix: ec2.internal
Name servers: x.y.z.z
SMTP source IP addresses:
virtual MTA "{default}": (any local)
virtual MTA "vmta_d_13541_x.x.x.x": x.x.x.x
Domain Keys:
OS: Linux 2.6.32-696.16.1.el6.x86_64 (CentOS release 6.9 (Final))
glibc v2.12 (stable), NPTL 2.12
OpenSSL 1.0.0i 19 Apr 2012
1/1 CPU (x86_64; Intel Xeon CPU E5-2676 v3 @ 2.40GHz)
1024 MB memory detected
Priority nice range: min. 15, max. 0
Use of realtime priorities disabled
Max. opened files: 4096, max. threads: infinite
Max. virtual memory: unlimited, max. data size: unlimited
Using license key Elysium3-5-316904
Spool initialization starting
Spool /var/spool/pmta
0 files, 0 directories, nextDir=0
Total of 0 files in use
Maximum number of recipients (based on system resources): 768000
Running under user pmta (uid 497); group pmta (gid 496)
Resolver: multi, 4 dispatchers
Resources allow for at most 0 pipe delivery thread(s)
Open file limit (ulimit -H -n) too low (4086), need at least 7767
SMTP Listener at x.x.x.x:2025 starting
SMTP Listener at x.x.x.x:2025 stopped
Stopping remaining threads...
Startup error: Insufficient process resources
sysctl.conf is set to 99999
You set to
– Pimp Juice IT – 2019-09-26T15:02:23.6509999
or99999
? Not sure if it matters but wanted to mention and/or confirm just in case. I assume you are referring to advice as per https://serverfault.com/questions/508307/power-mta-wont-start ... Look over suggestions on https://www.trushilla.com/services/pmta/ as well for additional steps perhaps.