Port 25 instead of 587

  • Resolved DonTimo

    (@dontimo)


    6 years, 6 months ago

    Hello,

    WP Mail SMTP only works for me if I set the port to 25 instead of 587 for TLS as my webhoster (1&1 Germany) says. Everything else will result in a timeout. After some research I got the impression that port 25 is somehow outdated or not really recommended anymore. Will the plugin stills send emails encrypted via SSL/TLS with my current setup with port 25?

    Regards Timo

Viewing 4 replies - 1 through 4 (of 4 total)
  • Plugin Author Slava Abakumov

    (@slaffik)

    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.

    Thread Starter DonTimo

    (@dontimo)

    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

    Plugin Author Slava Abakumov

    (@slaffik)

    Here is how it looks when I use SendGrid Mailer: https://cloud.supportally.com/sH4U

    Thread Starter DonTimo

    (@dontimo)

    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.

Viewing 4 replies - 1 through 4 (of 4 total)
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