Receiving duplicate voicemail email notifications

[NZvoip]

I have a client who is currently on v15.5 with a Standard license who has less than 10 extensions on their PBX.

Starting a week or two ago, one (maybe two) of the extensions started receiving blank voicemail messages. The call and activity logs show no calls at the time and it seems like the same voicemail is being sent over and over as the .wav extension has the same name. I've even disabled voicemail for their extensions and am still getting these notifications come through. Because they are on a Standard license, they're using 3CX SMTP server.

Another client of mine who is also on v15.5 with a Standard license in the last 2 days has reported several instances of receiving the same voicemail up to 6 times.


I have logged a support ticket for each case but am wondering if anyone else is experiencing this?

 

[Evolute IT]

I am using my own SMTP (Office 365) and I did not encounter this yet.

That might be a mail queue issue on the 3CX SMTP servers. I think it is powered by Sendgrid.

 

[Weber]

I have a client with the same issue. I have tracked down to when a voicemail is listened to on one extension and then forwarded to another extension the 2nd ext will keep getting emails about every 3 or 4 min's until the message is deleted from the 2nd ext mailbox.

They are using the 3CX SMTP, is this an "undocumented feature" ie:bug? Does anyone know how to fix it and /or make it stop. My theory is that there are some "do not reply" wars going on. Because the user had her email set with an out of office reply.

Thanks,
Keith A. Weber

 

[YiannisH_3CX]

Can you please specify if you are using a windows or a linux PBX?

 

[NZvoip]

Hi,

They are on Windows 7, so I know it's an unsupported platform but it has been fine until recently.

 

[chin]

I have a client with same issue that started today. Version 15.5.15502. Windows 10 PBX.

 

[NZvoip]

Hi chin,

Are they using 3CX SMTP for email?

 

[chin]

Hi chin,

Are they using 3CX SMTP for email?

Yes I verified email notifications coming from 3CX SMTP.

 

[fthomas_mcallen]

I am experiencing the same problem since last week. 3CX v15.5 on Windows. Voice mail setting is email notification and delete from mbox. Using 3CX SMTP server. The only pattern I have noticed is that the two users that have complained so far have multiple Yealink T4x phones tied to their extensions, but that may not be related obviously. We have other users with multiple phones who have not experienced the issue. I am investigating further and will post my findings.

 

[fthomas_mcallen]

A little more info on this. After working with one of the end users, what I have found is that the duplicate notifications arrive at a rate of one every 16 minutes like clockwork. This problem does not affect every voice message, and the number of duplicate emails varies.

 

[erling]

+1 Been having the same issue at several customer sites. An email, with a Voice Mail attachment, with just under 2 minutes of audio, is emailed every 16 minutes. The email contains the same file, from the same extension, and is sent out until the Voice Mail is physically deleted in the web client for the extension. I've had (angry) customers tell me they have "hundreds" of these emails filling up their inbox. No clear indication of what causes the glitch, but a fix is badly needed. This is really upsetting customers.

 

[manuel_ict]

Hi, I got same problem with a standard v 16.0.1581 on Linux Debian. SMTP 3CX. Someone knows how to fix it?

 

[big7]

Same issue here. Was on v15.5, upgraded to v16 and the issue persists. 1 user getting a notificaiton about a VM they already checked and deleted every 16 min.

 

[GCollins]

Same issue here. Was on v15.5, upgraded to v16 and the issue persists. 1 user getting a notificaiton about a VM they already checked and deleted every 16 min.

Add this under Settings > Parameters



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