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VTsoftware
Newbie
Joined: 17 May 2016
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Posts: 9
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| Posted: 18 May 2022 at 4:10pm | IP Logged
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Hi - Starting last week a client site of ours has been experiencing a strange problem.
Our VBA application sends email using the MailBee SMTP object, and the ValidateEmailAddress method is failing for perfectly good domains (for example gmail.com and the client's own domain, a major US university).
This happens when they are using our app on-premises, and in MailBee Objects 9.0 and 9.3.
When a user runs our app from home over their VPN, MailBee validates email addresses with no problem, and everything works as it should. From home, IPCONFOG shows that one user's DNS server is comcast.net, and in the office they are using an internal server.
When they are in the office, they have no issues sending emails from Outlook, or using the internet, so if there is an issue with their DNS server, it does not seem to impact general internet or email activity. The only oddity noticed so far is when MailBee tries to validate any email address.
in our app, whenever the ValidateEmailAddress method fails, we run it again using Open DNS at 208.67.222.222. It's strange that this second pass also appears to fail when they are on-premises. If there were an issue with their internal DNS server, I would think the catch-all of Open DNS would still recognize a valid email and return True.
I am trying to collect information and suggestions for the client's IT department to do some troubleshooting on their end. Can you suggest any lines of inquiry? Is there any more information available about how the ValidateEmailAddress method works (besides what is in the documentation) that could be helpful?
Thanks.
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Igor
AfterLogic Support
Joined: 24 June 2008
Location: United States
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Posts: 6038
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| Posted: 19 May 2022 at 1:37am | IP Logged
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Hello,
Please use the debug version of the DLL:
https://afterlogic.com/updates/mailbee.zip - 32-bit
https://afterlogic.com/updates/mailbee64.zip - 64-bit
Open a ticket in HelpDesk and send us C:\Temp\mailbee_debug.txt file.
--
Regards,
Igor, Afterlogic Support
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VTsoftware
Newbie
Joined: 17 May 2016
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Posts: 9
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| Posted: 19 May 2022 at 9:07am | IP Logged
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Thank you, Igor, I'll do that today.
Is the 32-bit or 64-bit version of the MailBee debug DLL for the OS (they all use 64-bit Windows) or for the VBA app (our app runs in 32-bit VBA)?
thanks.
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Igor
AfterLogic Support
Joined: 24 June 2008
Location: United States
Online Status: Offline
Posts: 6038
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| Posted: 20 May 2022 at 12:38am | IP Logged
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In such a case, 32-bit version should be used. Thanks.
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Regards,
Igor, Afterlogic Support
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Igor
AfterLogic Support
Joined: 24 June 2008
Location: United States
Online Status: Offline
Posts: 6038
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| Posted: 20 May 2022 at 1:18am | IP Logged
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Sorry, correction. The debug version of the DLL is found at:
https://afterlogic.com/updates/mailbee_debug.zip
The archive contains both 32-bit and 64-bit versions, you'll need to use the 32-bit one. Be sure to check readme file on registering the DLL.
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Regards,
Igor, Afterlogic Support
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