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Mail Enable and asp.net


Question

Does anyone here use Mail Enable Standard for pop3 and SMTP?

I'm having a very odd problem involving and online apt.net application that emails about 500 of our employees through Mail Enable. It's a form mailer written in asp.net. It's about 2 years old and all of a sudden this problem has popped up.

Symptoms:

I create an email with the form and hit send. It starts to send and confirms that XXX number was sent to the employees in our database. If I look in the mail enable SMTP queue I can watch the emails go out. However, on occasion two and rarely 3 emails are actually received by the end user.

Troubleshooting:

I have increased the time between sends. It takes almost 5 min to send 500 ish emails. I have made sure that if I?m sending out multiple messages I wait about 15 minutes between them. I have upgraded mail enable to the latest version. I have checked this forum as well as googled the heck out of the problem and have tried everything even remotely related to this issue.

Is it possible this might be related to a .net update or a hotfix or something? Nothing in this .net application has been changed recently and the problem just appeared for no visible reason.

I could really use some insight.

Any help is greatly appreciated. Thanks!

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update:

upon more research i've found that the problem is most likely caused by something in asp.net not in MailEnable as i originally thought. Here's what i've found.

The .net app is setup to send one email to every row in the Employee's table of our database. After a few minutes it confirms that it's send X amount of emails usually around 540. When i look into the MailEnable queue on the server there are 1000ish in there instead of 540 as i would suspect to see.

On occasions also we'll get an error message in the .net app that says "error unable to post data" or something to that effect.

With this new information can anyone shed some light on this for me?

Thanks!!

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