WebConfigure the following options to restrict the number and duration of connections to the FortiMail unit. When any of these limits are exceeded, the FortiMail unit blocks further … WebSpecify the maximum connections per client IP address in a period of 30 minutes. 0 means no limit. Restrict the number of messages per client per 30 minutes to Specify the …
Re: Fortimail - 421 4.7.0 Too many concurrent connections
WebJul 8, 2014 · Sendmail configuration (Connection timed out with alt4.gmail-smtp-in.l.google.com.) Hi guys! Background: I have to connect my laptop, useing ssh to a server with centOS and configurate an openVAS system to create scanreports and automaticly send them to the selected email adresses, but openVAS's emailing function not working … WebConfigure the following options to restrict the number and duration of connections to the FortiMail unit. When any of these limits are exceeded, the FortiMail unit blocks further connections. Setting any of these values to 0 disables the limit. ... Disable to replace the IP addresses or domain names with that of the FortiMail unit. stimulants facts
421 Too many concurrent SMTP connections; please try again …
WebSep 1, 2024 · 2. Too many headers added by intermediate servers. A “Received:” header gets added to a message whenever it passes through a mail server, mail gateway or an anti-malware program. To prevent mail loops (that is mail never getting delivered), mail servers bounce a mail if the number of “Received:” headers cross 20. An example of such an ... WebMar 16, 2024 · This error message is displayed in the protocol log file of the Send or Receive connector. Cause This issue occurs because TLS 1.1 and TLS 1.0 are deprecated in Microsoft 365. Resolution To resolve this issue, enable TLS 1.2 on the on-premises server that sends and receives email. Here's how to enable TLS 1.2 by modifying the registry: … Web2 Answers Sorted by: 1 There are various things you can try, from the top of my head: Install & configure Domainkeys Ensure there is valid reverse DNS for your server Ensure there is a valid MX & SPF record for your server Share Improve this answer Follow answered Feb 17, 2011 at 12:17 jamespo 1,698 12 12 stimulants for adhd list