hi sorry for not being clear
if send 500 emails as a list service then it will go together and get in queue almost immediately if send each email separately using a bulk-email tool and then the tools will smtp authenticate with my server first before sending the email, thus there is a time lag between emails being delivered meaning the other isps like yahoo, hotmail gmail etc will get emails from my server but not in say 100 emails per second kind of a timing .... well i will try and see what works best. rajesh > I've been under the impression that qmail always sends out emails > individually. DJB had a thing about multiple recipients, and rightly so > (if some are undeliverable and some are not, there's no good way of > handling the invalid addresses). In the long run, they all go out > separately anyway. You should verify this. I would expect that 500 > recipients would result in 500 messages in the queue, whether they're > submitted together or separately. > > Rajesh M wrote: >> hi >> >> a quick question >> >> is it better to send to say 500 recipients (mailing list style) in a >> single email or to send separately to each recipient which will leave a >> small around (1/2 second) time gap between each email. >> >> to send to 500 recipients using a mailing list method qmail will do it >> in >> less than 30 seconds >> >> if i send separately then it will be around 250 seconds for 500 emails >> >> rajesh >> >> >>> 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: >>> [email protected] >>> For additional commands, e-mail: >>> [email protected] >>> > > > -- > -Eric 'shubes' > > > --------------------------------------------------------------------------------- > 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: > [email protected] > For additional commands, e-mail: > [email protected] > > > --------------------------------------------------------------------------------- Qmailtoaster is sponsored by Vickers Consulting Group (www.vickersconsulting.com) Vickers Consulting Group offers Qmailtoaster support and installations. 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