SMTP connection to gmail-smtp-in.l.google.com

gmailnode.jssmtp

I am writing an SMTP client in node.js. I successfully tested it against an SMTP server running on my localhost. However I found out that I am unable to connect to gmail's servers. Trying it with telnet, I run into the same problem.

telnet gmail-smtp-in.l.google.com 587

hangs, and never responds. I do get a response on smtp.gmail.com, but that does not appear to be what I want. What am I doing wrong, and how can I implement it properly.

–Update–

To make it clear, I am sending an email to a gmail account, from my own smtp server

Best Answer

If you're not getting any response whatsoever it is likely to be your ISP blocking outbound port 25 connections. This is fairly common and is a technique for stopping botnet spam on consumer networks. See the MAAWG document on Managing Port 25.

Send from a real host - an Amazon EC2 server will work.

Also for sending mail inbound to Gmail, you want port 25, not 587.

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Switch to virtual. Read the VIRTUAL Docs by postfix. You have a lot more control that way.

main.cf:

virtual_alias_maps = hash:/etc/postfix/virtual
virtual_mailbox_maps = hash:/etc/postfix/virtualmailboxmap
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localuser  localuser
somealias  localuser
guser1     guser1@gmail.mydomain.com,guser1
bugs       issuetracker@issuetracker.mydomain.com

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I had this with a cyrus: transport for local accounts. I know this is not a complete answer to all you questions, but it could be a start.

Best Answer

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