i tried to use the maximumum recipients feature, but found that imail does not differentiate between incoming and outgoing (from customers) emails. some customers do not want to use mailinglists but sennd e.g. weekly email to 2500 recipients.
The customers are wrong. They are abusing your mailserver. Putting 2500 email addresses in To: or Cc: fields will give a header length that will be blocked by many MXs (as part of their anti-abuse defense.).
so i have to reset the max. recipients value to unlimited, because it is useless for me. any idea to fix this?
set you max rcpt per smtp session to YOUR number (to protect your mailserver and mail services for your clients).
Tell your clients that you have, I assume, a list server for such large lists, or tell them to buy their own mail blaster/spamware for their PC. And tell them, if the mail program sends through your server, to set SMTP "chunk" number to your max number.
another nice feature is smtp delay (see attached) text.
The SMTP delay will be applied to all your traffic. It will cause your server to extend EVERY SMTP session from a normal 5 to 10 seconds to 200 or more seconds, with the real risk, for a busy server, that your delay policy will DoS your server as the number of concurrent SMTP sessions explodes to 20 or 30 times that of non-delayed SMTP. Such a policy is useable only if your server has tons of memory and other resources available for the SMTP sessions.
Len
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