Aleph 22: Mailing fails with error 'Error "421 4.3.2 The maximum number of concurrent connections has exceeded a limit, closing transmission channel"
- Article Type: General
- Product: Aleph
- Product Version: 22
Problem Symptoms:
When mailing the following error occurs in the GUI client:
Unable to Find Id: 421: SMTP server not avalable in File: message.dat
When trying to telnet to the Mailserver on port 25 the error "421 4.3.2 The maximum number of concurrent connections has exceeded a limit, closing transmission channel"
is displayed
Cause:
Secure SMTP (SSL) creates parallel sessions
Resolution:
Configure the mail server parameter
MaxInboundConnectionPerSource to 1000 or even to unlimited.
Category: Installation & Upgrades (500) - ALEPH
Subject: Installation - ALEPH
- Article last edited: 9/11/2014