What would be the easiest and more effective way to check for bouncing email addresses? Thank you.
--- Manuel Lemos <[EMAIL PROTECTED]> wrote: > Hello, > > B Richards wrote: > > > > How many emails per hour can people generate on a > typical dedicated server? > > on qmail? on smtp? > > It depends on many things. Anyway, queueing is one > thing and delivering > is another. Queuing and delivering from the same > machine is usually slow > because it requires the server to resolve the domain > and connecting with > each recipient MX to deliver the messages. If the > connection is slow, > everything is stalled. > > For very large recipient lists like large mailing > lists sites like > eGroups, the recommended setup is at least one > server for queuing the > messages in one or many others. The queuing is best > achieved using QMQP. > SMTP is too slow because it degrades queuing speed > exponentially with > the number of recipients. > > Anyway in a network with one server for queueing > (where ezmlm was) and 8 > servers for delivery, it could queue 10.000 messages > per minute using > SMTP. With QMQP it would be much faster queueing > because it would not > expand VERP addresses and would only queue one > message in the delivery > servers. > > The actual delivery it depends a lot on the Internet > link you have and > the connectivity with the remote servers. Bouncing > and hard to connect > servers make it very slow. That is why it is > important to prune the > bouncing addresses from your mailing lists. > > ezmlm process is reasonably good handling bounces > but I would not > recommend starting a mailing list with a large > number of subscribers > without first pruning it because the last retry > message that is sent to > all bouncing addresses after 11 days (1.000.000 > seconds) may choke your > queuing server because it send out individual > messages and if there are > many bouncing addresses that can make your machine > and network choke > with very high traffic. > > Trust me, I had to put up with the embarrassment of > choking a newsletter > server with 1/3 of near 300.000 subscribers of MTV > Brasil newsletter! > Can you imagine almost 100.000 subscribers being > mailed and bouncing at > the same time. (Gulp!) Living and learning. :-) > > > Regards, > Manuel Lemos > > > > ----- Original Message ----- > > From: "Manuel Lemos" <[EMAIL PROTECTED]> > > To: "Ed Lazor" <[EMAIL PROTECTED]> > > Cc: <[EMAIL PROTECTED]>; > <[EMAIL PROTECTED]> > > Sent: Saturday, February 02, 2002 9:09 PM > > Subject: Re: [PHP] Re: Sending an e-mail to 1,000 > people > > > > > Hello, > > > > > > Ed Lazor wrote: > > > > > > > > At 06:25 PM 2/2/2002 -0500, Chris Cocuzzo > wrote: > > > > >Godamnit. Shut-up about this already for > godsakes and answer the > > > > >original question!! > > > > > > > > LOL hehe good point Chris. > > > > > > Aleluia, somebody sensible! :-) > > > > > > > > > > >"Ben Clumeck" <[EMAIL PROTECTED]> wrote in > message > > > > > > I would like to send an e-mail (the same > e-mail) to 1,000 different > > > > > > people. I want each persons name to be in > the "To:" field. Is > > there a > > > > > way to > > > > > > customize it to where it can say Dear____ > (having a different > > persons name > > > > > > corresponding to an e-mail address) so > that it looks customized. > > > > > > > > Ben, how you approach this will depend on how > you have the data > > > > stored. Let's assume two things: you have > the e-mail addresses and > > names > > > > in a database and know how to retrieve and > store them into the variables > > > > $email and $name. That said, create the body > of your text: > > > > > > > > $body = " > > > > Dear $name, > > > > > > > > Here are recent developments on our web > site... etc. > > > > "; > > > > > > > > Then use the mail function > > (http://www.php.net/manual/en/function.mail.php) > > > > to send the letter to the person like this: > > > > > > > > mail($email, "Site update", $body, "From: > [EMAIL PROTECTED]"); > > > > > > > > The next thing you'll probably start wondering > is how to send fancy > > e-mail > > > > instead of those generic text based ones... > PHPBuilder has an article > > > > you'll want to check out located here: > > > > > http://www.phpbuilder.com/columns/kartic20000807.php3. > > > > > > I do not advice anybody to send personalized > bulk mail, even less in > > > PHP. It will take a lot of time to just queue > the message in the local > > > relay mail server and since each message has to > be stored separately in > > > the mail server queue disk consuming a lot of > space. > > > > > > What I recommend is to just queue a single > message with all recepients > > > in Bcc:. This is better done with qmail using > qmail-inject because you > > > do not have to actually add Bcc: headers to the > message, just the > > > recipients addresses, one per line, and then > headers and the body of > > > the message. You may want to try this class for > composing and sending > > > MIME messages. It has subclasses for queing with > PHP mail function, SMTP > > > server, sendmail and qmail. > > > > > > > http://phpclasses.upperdesign.com/browse.html/package/9 > > > > > > If you can use it, I recommend to use qmail > because it is much faster > > > than the other alternatives to queue message to > be sent to many > > > recipients and also provides very good means to > figure exactly which > > > addresses are bouncing your messages so you can > process them eventually > > > unsubscribing the users in question, thanks to > its VERP capability > > > (Variable Envelope Return Path). > http://www.qmail.org/ > > > > > > If you want to send messages regularly to the > same group of users, I > > > recommend that you use ezmlm-idx because it > provides very efficient and > > > secure way to handle subscriptions and messages > bouncings. > > > http://www.ezmlm.org/ > > > > > > I don't recommend the patches of ezmlm that let > it be interfaced with > > > user lists maintained in MySQL or PostgreSQL. I > doubt that those > > > databases are faster to query than DJB's cdb > user list databases. Also, > > > I don't think that most people want the user to > be deleted from a > > > database if it's address is bouncing for too > long (11 days). > > > > > > Anyway, you may want to look into this PHP web > interface to create and > > > setup options of ezmlm mailing lists. It also > comes with a SOAP server > > > interface that you can use to provide Web > services to subscribe, > > > unsubscriber, verify and count users in ezmlm > mailing lists. > > > > > > > http://phpclasses.upperdesign.com/browse.html/package/177 > > > > > > Regards, > > > Manuel Lemos > > > > > > -- > > > PHP General Mailing List (http://www.php.net/) > > > To unsubscribe, visit: > http://www.php.net/unsub.php > > > > > _________________________________________________________ > > Do You Yahoo!? > > Get your free @yahoo.com address at > http://mail.yahoo.com > > -- > PHP General Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > ===== Anas Mughal [EMAIL PROTECTED] [EMAIL PROTECTED] Tel: 973-249-6665 __________________________________________________ Do You Yahoo!? Great stuff seeking new owners in Yahoo! Auctions! http://auctions.yahoo.com -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
