Hey Liferay-Community,
while I - myself - think Liferays way of switching away from true
Open-Source to Open-Source with documentation hidden behind paywalls (
https://help.liferay.com/hc/en-us/articles/4406443538829-Configure-Mail-Server-and-SMTP-to-get-email-notifications
) is a bad decision and has no real future, I hope I can find someone
in the community, that can bring some light in the - for me - very
dark SMTP-Server-Knowledge world.
We are using com.liferay.mail.kernel.service.MailServiceUtil to send
Notification E-Mails. Our quite big customer is using 7 Mail-Servers
that sometimes / occasionally send the same mail multiple times to the
same recipient (not wanted).
When debugging that issue we can not reproduce with only one
Mailserver nor find a hint that there are multiple sendEmail()-Calls
when using multiple Mailservers.
Has anyone else came across that problem?
Liferay 7.3.5
