smtp 15.5

  1. rjamesm2884

    CFD not sending emails with 3CX SMTP or any other SMTP server

    We have created a call flow with the demo to record a message and send an email. Unfortunately the script will not send the email upon selecting 3CX server settings nor adding a Gmail SMTP or Office 365. We know for a fact that the ports are open on the firewall because we get emails from the...

  2. 3CX SMTP blacklist?

    Client has been running a 3CX Std license for several years using their own SMTP server. After recently upgrading them to v15.5, this obviously changed to using the 3CX SMTP server. During the upgrade, we missed that the client had a dummy extension setup to act as a general voicemail box...

  3. V15.5 SP6 - MailKit cannot connect to my postfix SMTP server

    Since upgrading to SP6 I'm having trouble with connecting to my Postfix SMTP server in the email settings. My Postfix server is hosted on the same subnet as 3CX and is set to only allow SSL/TLS. I use letsencrypt for SSL and the certificates are verified as valid. This SMTP server is...
  4. Fabian Pfenninger

    Solved Mail not working, certificate error, 3cx smtp server

    I am running the standard license and 15.5.0 with the built in smtp server. Built on the latest debian linux iso (about 2 days old). As the HTTPS certificate issued by 3cx states a FQDN mycompany.3cx.ch I can login into the system panel. Everything is green and working but the mail. I want to...

  5. Forced to use 3CX SMTP on registered annual licensed system

    What am I missing here? I went to check on the SMTP configuration the server drop-down menu is grayed out and I can't change any settings. This is not the freeware edition.
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