Error 421 Too many concurrent SMTP connections

[bfcrew]

Hi guys,

In one of my VPS which are 'still' using VestaCP I started getting this error in my email marketing application:

Code: Select all

Expected response code 220 but got code "421", with message "421 Too many concurrent SMTP connections; please try again later. " Log data: ++ Starting Swift_SmtpTransport << 421 Too many concurrent SMTP connections; please try again later. !! Expected response code 220 but got code "421", with message "421 Too many concurrent SMTP connections; please try again later. " (code: 421)

I checked in /etc/exim/exim.conf and I couldn't find any limit.

Maybe someone care to help how to troubleshoot this?

TIA,
bfcrew

[dpeca]

https://github.com/myvesta/vesta/commit ... a4ef47d2a3