Your recommendation please: big volume mail solution

Scott Silva ssilva at
Wed Nov 7 17:28:34 GMT 2007

on 11/6/2007 11:29 AM Arthur Sherman spake the following:
> Hi,
> A client asked me to build for him a mail solution, capable of sending up to
> 1 milllion emails a day, while each email doesn't exceed 50KB in size.
> How do I calculate:
> 1) how many servers
> 2) how do I calculate the above
> 3) is there any max emails a day from IP/domain, which triggers black and
> blocklists
> 4) what is your recommended software solution
> On this stage, most distribution would be in single country.
> Thanks in advance
> Arthur
 From the MAQ;

Volume: 1,750,000 messages/day (in the lab)

Average Load: Average of 12

Hardware: Dual Xeon 3.2Ghz, 2 GB RAM, 4x 18 GB RAID-1 (using an HP DL380 G3)

Software: Tao Linux 1.0, Postfix 2.0.18, SpamAssassin 3.02, Razor, DCC

RBLs: XBL + SBL in MailScanner

Virus Scanners: ClamAV, Sophos, BitDefender

Notes: This performance was achieved in the lab, using random message sizes 
between 1 and 100 Kb. Please see the List archives for 'System capacity'.

Volume : 770,000 messages per day

Hardware: Dual Opteron, 4Gb RAM, SCSI disk

Software: RedHat Enterprise Linux 4

Configuration: MailScanner 4.50 default setup with clamavmodule virus scanner, 
SpamAssassin, Razor, DCC, Sendmail


Since you believe this isn't a spammer, you don't need any of the process hogs 
like antivirus or spamassassin, or even need mailscanner because the sender 
already knows what his content is  ;-)  and should be able to achieve the goal 
with one of these. With quad core Xeons very common right now, it should be 
fairly easy if it has a big enough pipe to the internet, and you tune things 
like timeouts and retries to run later or not at all.
Being an opt-out list, you could probably just dump the retries, and just 
shotgun the messages out to where they fall.

I see just another direct marketer trying to compete for MY bandwidth.
Someday, people will be smart enough to not buy things marketed this way ... 
never mind, won't happen. Look at the people that still fall for 419 scams.

MailScanner is like deodorant...
You hope everybody uses it, and
you notice quickly if they don't!!!!

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