Telnet smtp.gmail.com 587
How to check gmail account exists or not | telnet gmail-smtp
I’ve been having trouble sending outgoing mail via Thunderbird for a few weeks now. I was previously using the default gmail IMAP and SMTP settings (port 993 for IMAP and port 465 for SMTP SSL). I started having trouble sending email and kept getting connection errors all of a sudden. Based on some telnet research, it appears that my ISP is blocking ports 465 and 25… is port 587 the only choice left? When I use STARTTLS and smtp.gmail.com to send an email over port 587, it says “linked…” and then “link timed out…” after 20 seconds. On Windows 7, I’m using Thunderbird 3.1.5. I currently have the following settings for Tools>>Account Settings>> Pane on the left: SMTP (Simple Mail Transfer Protocol) servers are: smtp.gmail.com is the server. 587 (port) STARTTLS (there are three options: none, STARTTLS, or SSL/TLS) No Authentication, Normal Password, Encrypted Password, Kerberos/GSSAPI, or NTLM are the options for authentication. [email protected] UserName: [email protected] UserName: [email protected] Consumer I’ve tried different authentication/port combinations, but it’s possible that I’m entering these incorrectly or missing anything. (The inbound mail has been perfect the whole time.) I eagerly await any feedback!
How to test an smtp server – send email from command
I was just trying to simulate an SMTP link on my Windows XP command line, but when I telnet smtp.gmail.com at the 465 port, nothing happens. With the mouse, a blank command window with the title Telnet smtp.gmail.com appears. The prompt simply closes when I type EHLO or the standard SMTP handshake commands.
From there, it’s not as simple as sending SMTP messages because Gmail has safeguards in place to ensure that you only send emails that appear to come from accounts that you own. Instead of typing “Helo,” substitute “Ehlo.” I’m not familiar with SMTP, so I can’t explain the differences, and I don’t have time to do so. Someone with more experience would be able to explain.
This is basically the Base 64 representation of the word “Username.” Encode your user name with a Base 64 encoder like this one and enter it. Do the same for your password, which is the next thing you’ll be asked for. You should check out:
If you’re using OSx or Linux terminals, there’s one more quirk to deal with. Apparently, pressing the “ENTER” key does not result in a CRLF, which is required by SMTP to end a post. “CTRL+V+ENTER” must be included. As a result, this should look like this:
[solved] phpmailer smtp error could not connect to smtp
Edit: Okay, the additional information suggests that something is interfering with your link, but it’s unclear if it’s your ISP or not. You might use a method like TCP Traceroute to see how far your link goes before being dropped.
Even if you use a @gmail.com email address, you can customize your email client to send mail through your ISP’s SMTP server. You may be required to authenticate with the SMTP server using your ISP-based credentials if appropriate. Essentially, you’re demanding that your ISP relay for you.
Windows server 2016 – install smtp and configure, test
Hello, I’m no longer able to send a simple email from the command prompt using any command line email utility. Postie, Blat, Powershell, and a slew of other options all fail or do nothing. Powershell should be able to do it, but if you’re using a gmail account, you’ll need to log in. Is there some way to do this now?
I concur. Rock’n’roll Your gateway is blocking port 25. Use the command “telnet mail.mediacombb.net 587” to connect to the server. If you receive a connection, port 25 is blocked. Instead of gmail.com, use “smtp-relay.gmail.com” for gmail.
That’s right. That means you’ll be able to connect, but you’ll have to avoid port 25 because it’s blocked. Since port 587 or 465 is intended for encrypted data, your input is null, and the link is lost, the command prompt reappears.
When I get to the AUTH LOGIN stage, I get the error 503 5.5.1 bad sequence of commands, according to RobertStone.
I told telnet smtp-relay.gmail.com not to send email through that server for your tests. It wasn’t built to be used in that manner. If you want to use gmail to send emails via cmd, you’ll need to connect to port 465 using an SSL client like openssl. 465 (smtp.gmail.com)