>I need to setup a IMGate box that can handle around 120,000 messages a
>day, what should I be using as far as processor and memory
2 GHz, 2 GB
>. Also,
>theoretically, what are the limits that postfix could handle as far as
>messages an hour with a P4 2.8 HT with a gig of Ram.
here's a traffic for yesterday:
Postfix log summaries for Dec 7
Grand Totals
------------
messages
381239 received
405586 delivered
0 forwarded
11 deferred (137 deferrals)
18 bounced
312200 rejected (43%)
523064 reject warnings
0 held
0 discarded (0%)
10265m bytes received
11780m bytes delivered
231043 senders
59997 sending hosts/domains
17554 recipients
807 recipient hosts/domains
smtpd
957k connections
76572 hosts/domains
3 avg. connect time (seconds)
747:34:58 total connect time
Per-Hour Traffic Summary
time recevd delivd deferd bouncd rj_4xx rj_5xx errlim rj_anv
0000-0100 11682 12914 6 0 0 19507 8750 13571
0100-0200 11981 12905 6 0 0 14001 6087 13769
0200-0300 11162 12099 8 0 0 13448 5939 14013
0300-0400 11309 12214 9 0 0 17982 8040 13798
0400-0500 9739 10590 8 2 0 10889 4415 13840
0500-0600 10498 11459 8 0 0 10782 4339 13769
0600-0700 11393 12494 7 0 0 10625 4436 14074
0700-0800 12065 12908 1 0 0 11832 4958 14247
0800-0900 14513 15718 9 1 0 12216 5408 13985
0900-1000 18658 20129 5 0 0 14090 6339 13561
1000-1100 21510 22563 5 0 0 14036 5606 13717
1100-1200 22320 23394 2 0 0 13754 5517 12910
1200-1300 22074 23401 3 0 0 14540 5799 13370
1300-1400 23223 24441 7 1 0 13123 5309 12461
1400-1500 23168 24157 6 0 0 13567 5469 12774
1500-1600 22686 24093 6 0 0 12009 4659 17077
1600-1700 20919 22071 3 0 0 10917 4475 19729
1700-1800 19329 20084 4 0 0 10360 4324 23069
1800-1900 16428 17410 5 2 0 10272 4339 23546
1900-2000 14498 15097 7 3 0 9814 3998 22091
2000-2100 14367 14989 9 5 0 13313 5816 22940
2100-2200 13944 14788 5 2 0 11047 4461 22536
2200-2300 12818 14091 3 2 0 11255 4642 22542
2300-2400 10955 11577 5 0 0 10684 4305 18295
the hardware:
mx1# less /var/run/dmesg.boot
CPU: Intel(R) Xeon(TM) CPU 3.00GHz (2992.51-MHz 686-class CPU)
real memory = 1073479680 (1048320K bytes)
Waiting 15 seconds for SCSI devices to settle
pass1 at mpt0 bus 0 target 6 lun 0
pass1: <PE/PV 1x2 SCSI BP 1.0> Fixed Processor SCSI-2 device
pass1: 3.300MB/s transfers
da0 at mpt0 bus 0 target 0 lun 0
da0: <MAXTOR ATLAS15K_36SCA DTA0> Fixed Direct Access SCSI-3 device
da0: 320.000MB/s transfers (160.000MHz, offset 127, 16bit), Tagged Queueing
Enabled
da0: 34732MB (71132959 512 byte sectors: 255H 63S/T 4427C)
=====================
the 15 minute CPU load is about 0.2. so you don't really need 3 GHz
CPU. If you want to save a few $$$, get a 2 GHz.
The single SCSI disk above could be replaced with 2 ATA100 disks with 8MB
cache and running on separate, dedicated ATA100/133 channels.
Len
