> Hi, > > I happen to work in E-Marketing, so here's my five cents (hope it's > helpful!)... > > What I am going to say ASSUMES that highest possible deliverability is > what you are after. > > Am 05.07.2010 um 16:12 schrieb Tonix (Antonio Nati): > >> >> Main problem I see is related to qmail opening a new session for each >> outgoing email. >> Yahoo and others see hundreds of parallel sessions opened all together >> from the same IP, so they close new connections from that IP, because >> they feel to be attacked. >> We need a mechanism to send several e-mails using the same connection. >> >> Tonino > > That in itself would not be a solution at all, I am afraid. A lot of ISPs > actually limit (on purpose) the amount of messages they accept per > connection plus the number of connections within given time plus the > number of concurrent connections. > > You would need, and indeed major Email Service Providers have that at > least for the major ISPs, one configuration profile per ISP to achieve > ideal performance and deliverability. These profiles are not stable - ISPs > often change them (without publicly broadcasting the fact) to throw off > spammers. > > But it is worse than that. New (from the standpoint of the ISP) senders > have to train or 'seed' their IP. That is to say: achieve a consistent > mailing frequency (number of mailings per timeframe), mailing size > (recipients per mailing), bounce rates (there should never be spikes in > your hard bounces, e.g. 550 type errors) and last but not least complaint > rate (which should be next to non-existant if you want good > deliverability). Complaint rate means if someone in e.g. AOL marks a mail > and clicks the 'This is spam' type button. > > Some of the checks ISPs make are automatic. They just monitor traffic and > if there are spikes or 'irregular' behavior, your bandwidth gets limited, > mails bounced, you name it. > > Also, no matter how you acquired the emails you HAVE to remove > hard-bounces and not retry sending to them again. Codes / Messages vary > from ISP to ISP. > > Last but not least it is very tedious to communicate with ISPs should you > land on a blocklist (plus there are some public blocklists where you can > never get removed) > > I am very confident that qmail can handle all of this volume-wise, but it > lacks the proper tools to fine-tune for Deliverability as well as > automated bounce and complaint management that are required to achieve > results comparable to professional senders. > > I attached the latest forrester research results I have on the topic of > emarketing vendors and would suggest you give that a thought. > > Again, this is only if your main concern is Deliverability. > > Cheers, > > Martin > > --------------------------------------------------------------------------------- > Qmailtoaster is sponsored by Vickers Consulting Group > (www.vickersconsulting.com) > Vickers Consulting Group offers Qmailtoaster support and > installations. > If you need professional help with your setup, contact them today! > --------------------------------------------------------------------------------- > Please visit qmailtoaster.com for the latest news, updates, and > packages. > > To unsubscribe, e-mail: > qmailtoaster-list-unsubscr...@qmailtoaster.com > For additional commands, e-mail: > qmailtoaster-list-h...@qmailtoaster.com >
hi thanks very much for this information. rajesh --------------------------------------------------------------------------------- Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. If you need professional help with your setup, contact them today! --------------------------------------------------------------------------------- Please visit qmailtoaster.com for the latest news, updates, and packages. To unsubscribe, e-mail: qmailtoaster-list-unsubscr...@qmailtoaster.com For additional commands, e-mail: qmailtoaster-list-h...@qmailtoaster.com