Am 04.06.2011 10:45, schrieb Robert Schetterer: > Am 04.06.2011 06:03, schrieb Goutam Baul: >> Dear List, >> >> >> >> We are running our mailing system using Postfix >> (postfix-2.0.16-14.RHEL3). We need to send communications to our >> shareholders (around 15000 of them) using the mailing system. If we >> simply send the mails using things like phpmailer etc. then we fear that >> >> >> >> 1) 1) There could be an issue with the server performance as >> because these many numbers of mails will be pushed to the queue at the >> same time. This can, however, be addressed by tweaking the mail sending >> script carefully. >> >> 2) 2) Some of the receiving domains like yahoo etc. might >> think that we are creating spam and blacklist us. >> >> >> >> We don’t have any idea on how many mails should be safe to push per hour >> so that our servers don’t face the risk of getting blacklisted. Is there >> any threshold value? >> >> >> >> Would anyone advice us on the correct approach that we should take? This >> is going to be a regular feature in our operations and we need to device >> a good solution. Any help please. >> >> >> >> With regards, >> >> >> >> Goutam >> >> >> >> >> > > 15000 news mails are no problem with recent postfix on modern hardware > so perhaps you should upgrade, anyway configure slow transports to i.e > yahoo etc , use their whitelist featuring etc > >
as said before, a matching reverse dns record , spf and dkim is highly recommended -- Best Regards MfG Robert Schetterer Germany/Munich/Bavaria
