These ports 465 and 587 are both used for sending mail (submitting mail) but what is the real difference between them?

Mar 13, 2025 · Sometimes couldn't connect to host, port: smtp.office365.com, 587; timeout -1; Asked 11 months ago Modified 11 months ago Viewed 403 times

May 31, 2018 · I am attempting to create a script that send an email, using Gmail. However, my code freezes when the line below is ran: smtplib.SMTP ("smtp.gmail.com", 587) It is before my username …

Feb 1, 2016 · Linux configuration -- ssmtp: Cannot open smtp.gmail.com:587 Asked 10 years ago Modified 1 year, 5 months ago Viewed 65k times

Jun 1, 2022 · Nodemailer- connect ECONNREFUSED 127.0.0.1:587 Asked 3 years, 8 months ago Modified 3 years, 8 months ago Viewed 4k times

Jul 13, 2016 · How can I view the SSL certificate details that is being used on ports 587, 25, 110, 465, 995, 143 & 993 I need to check which domain name is being used to secure these ports.

May 11, 2023 · Timeout to open TCP connection to smtp.sendgrid.net:587 (exceeds 5 seconds) in Rails 7 when sending email in development Asked 2 years, 9 months ago Modified 2 years, 1 month ago …

Apr 9, 2021 · I was attempting to avoid this problem by forcing Postfix to send on port 587 instead of port 25. After careful setup & troubleshooting, all of my attempts to send test-emails on the command line …

Aug 24, 2022 · I'm trying to connect nodemailer to send mails to users after registration. So I turned on IMAP in google settings, than I created app to generate password, and it all works with this serivs. …

Dec 28, 2019 · stream_socket_client (): unable to connect to tcp://smtp.sendgrid.net:587 Asked 6 years, 1 month ago Modified 5 years, 2 months ago Viewed 7k times