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- What is the difference between ports 465 and 587? [closed]
These ports 465 and 587 are both used for sending mail (submitting mail) but what is the real difference between them?
- email - Using SMTP, Gmail, and STARTTLS - Stack Overflow
Gmail exposes port 465 for SMTP over SSL and port 587 for SMTP with STARTTLS, as documented here The difference between these two is that SMTP over SSL first establishes a secure SSL TLS connection and conducts SMTP over that connection, and SMTP with STARTTLS starts with unencrypted SMTP and then switches to SSL TLS
- Sometimes couldnt connect to host, port: smtp. office365. com, 587 . . .
Sometimes couldn't connect to host, port: smtp office365 com, 587; timeout -1; Asked 9 months ago Modified 9 months ago Viewed 315 times
- How to send email using simple SMTP commands via Gmail?
For educational purposes, I need to send an email through an SMTP server, using SMTP's fundamental and simple rules I was able to do that using smtp4dev I telnet localhost 25 and and commands a
- How can I convert an RGB image into grayscale in Python?
I'm trying to use matplotlib to read in an RGB image and convert it to grayscale In matlab I use this: img = rgb2gray(imread('image png')); In the matplotlib tutorial they don't cover it They j
- tomcat - Sending mail on localhost works, but when deployed to . . .
Sending mail on localhost works, but when deployed to webserver I get Couldn't connect to host, port: smtp gmail com, 587 Asked 5 years ago Modified 5 years ago Viewed 487 times
- Cannot connect to smtp. hostinger. com on ports 465 587 after . . .
I contacted DigitalOcean support to ask if they block SMTP ports (465, 587) but have not yet received a response It looks like outgoing connections to SMTP ports are being blocked after the droplet resize
- sockets - Sending emails through Java - Stack Overflow
Sending emails through Java - javax mail MessagingException: Could not connect to SMTP host: localhost, port: 587; Asked 11 years, 2 months ago Modified 9 years, 7 months ago Viewed 20k times
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