Darin, We're doing the same/similar thing. We have a newsletter subscription application for an elected official. Question for you: Out of about 10K addresses, we're getting about 1,000 bouncing. After checking those addresses individually, there are less than maybe 10 that are actually bad addresses.
1) Addresses are good. 2) Mail comes from [EMAIL PROTECTED] 3) Mail bounces to [EMAIL PROTECTED] 4) If I login as [EMAIL PROTECTED] and send a message to the destination email, it goes through just fine. 5) If I use ASP CDO to login as [EMAIL PROTECTED] and send the message to destination email, it gets bounced. Header for bounced email using CDO (domains, ips, and emails changed): =================================================================== Delivery failed 3 attempts: [EMAIL PROTECTED] Original message follows. Received: from app1 [64.9.1.1] by mail.domainA.com with ESMTP (SMTPD32-7.13) id A43C1D20170; Mon, 07 Mar 2005 17:31:08 -0600 thread-index: AcUjbZ560LN/BRdiT9mnrhllJIxIcA== Thread-Topic: Fundraising Invitation, March 15 From: <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Subject: Fundraising Invitation, March 15 Date: Mon, 7 Mar 2005 17:31:07 -0600 Message-ID: <[EMAIL PROTECTED]> MIME-Version: 1.0 =================================================================== Header for accepted email using Outlook (domains, ips, and email changed): =================================================================== Received: from RASPBERRY1 [67.10.1.1] by mail.domainA.com with ESMTP (SMTPD32-7.13) id A1A125F013C; Fri, 11 Mar 2005 11:13:05 -0600 Reply-To: <[EMAIL PROTECTED]> From: "Source User" <[EMAIL PROTECTED]> To: "Dest User" <[EMAIL PROTECTED]> Subject: Fundraising Invitation, March 15 Date: Fri, 11 Mar 2005 11:30:02 -0600 Message-ID: <[EMAIL PROTECTED]> MIME-Version: 1.0 =================================================================== Do some SPAM filters require a "Reply-To" header? It's definitely not the content of the email. We can send those individually without any problems. Any ideas or suggestions would be greatly appreciated. Incidentally, for us, it takes roughly 2 hours to go through the first 7K-8K of the recipients. For some reason (I'm guessing bounces), the last 2K-3K take about 4 hours to clear the queue. 1GHz/512MB RAM - bandwidth for email throttled to 256kbps avg email size 17K Thanks, Norm -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Darin Cox Sent: Friday, March 11, 2005 1:34 PM To: [email protected] Subject: Re: [IMail Forum] IMail List Server No, it's a unique message body to every recipient...separate SMTP sessions for each recipient...it's a true newsletter subscription system. However, it is multi-threaded....usually runs about 10 simultaneous threads. Even at that, it's still 10 times faster on average than the benchmark of 10 seconds per. I think total message throughput answers the original question more completely. Darin. --- [This E-mail scanned for viruses by Declude Virus] To Unsubscribe: http://www.ipswitch.com/support/mailing-lists.html List Archive: http://www.mail-archive.com/imail_forum%40list.ipswitch.com/ Knowledge Base/FAQ: http://www.ipswitch.com/support/IMail/
