Hi @dontimo,
Port itself doesn’t matter, that’s like a door you are using to go out of the house. If you put your clothes (uses TLS encryption) – you are good, if go through that door without clothes (no encryption at all) – you are screwed.
So, if email delivery works for you on port 25 on your server AND you are still using TLS encryption – you are totally fine.
Hello Slava,
thanks for your reply and the great comparison 😉
Email delivery works for me. But can I check somehow if TLS encryption was really used for sending the email? I’m not sure whether WordPress just uses the standard mail function without encryption. How can I check that e.g. with a sending protocol or somehow? I need to assure of the encryption because of the new GDPR guidelines.
Regards Timo
Here is how it looks when I use SendGrid Mailer: http://cloud.supportally.com/sH4U
I see this encryption sign in Gmail as well, but also if I change the encryption setting in WP Mail SMTP to None.
So are there any other ways to see if an email was sent using SSL or TLS encryption?
Using Apple Mail here but sometimes in the mail header there is something like “version=TLS” and sometimes not. So this does not seem to be a reliable sign.
