Why is Gmail SMTP not working?

My Gmail SMTP server is set to 'send mail as', and it's not sending out any email messages.

I am using Outlook to send my emails, and they are sent with no problems.

I have checked the following: The smtp-server in my gmail account is set to send mail as (default setting). Gmail receives mail successfully. The 'send as' mail settings in Outlook are set correctly (for example to 'send as'). All the gmail settings are set correctly for the sender, and the recipient. The gmail account is set to 'not spam'. The gmail account is set to not be verified. The gmail account is set to send and receive encrypted mail. Gmail is configured to receive mail from all other accounts (this may be relevant). There are no mail servers/hosts blocked/banned. There are no restrictions on incoming email (this may be relevant). I have tried the following: Uninstalled Outlook and all its components. Deleted the .pst files in Outlook Restarted Outlook. Cleared the Outlook history. Disabled the mail filter. Checked my password and smtp settings. Checked that my Outlook is up to date. Checked the IP address of the mail server. I have also tried switching to a different server on the MX record and tried using 'send from', but both do not work. I have tried sending to myself and others, and none of them get an error message, and nothing shows up in their gmail accounts.

If anyone has any suggestions as to what may be going on, or any other possible ideas, please let me know! Thanks! Sending email as someone else could be done, but you can't just choose to send mail as someone else. You should have two accounts: One is used for receiving email. The other account is used for sending email. You would use this account to send email as yourself.

I hope this helps.

What is the outgoing SMTP server for Gmail?

I am trying to set the server to work with Gmail SMTP.

When I check through gmail's configuration it shows out my IP. I am also behind a firewall, and a spam filtering service on the server.

I need to know if my IP is listed there and if not, how do I configure this server? Do I still put in MY IP for the Outgoing server's name? Or is this completely wrong? Or is this some other way of configuring it? Gmail is set up to use your external server when you are connected to your network with an IP or private proxy (no idea what Google calls that. It really just means that your computer/network is acting as a modem and Google can access the Internet to your computer over a network instead of going to some super long DNS and the ISP's servers for everything (although they probably try to do that too). I don't think that applies to mobile modems and wifi connections; if it does I don't know it. If this is what you meant I would go to my router admin panel and select your "Outgoing Server" to use if you can see where your router admin is. If you don't have an admin panel it could be anywhere.

This answer seems to be somewhat out of date or misleading. We used to have a "Proxy Server" that was our outgoing SMTP server for sending emails out (and accepting incoming mail for spam checking) that always had a static IP on the Internet so that Google didn't attempt to contact our DNS servers but we got an error when trying to use that (it said our external IP was not accessible), we got some support from the guy that originally built it, he told us that this solution would work with any ISP as long as you can get out of their local NAT'd area by doing the following: If you have a Dynamic IP, (that might be easier but depends on your network / ISP) You can make a dynamic DNS on DynDNS.com with a hostname that matches your external IP and your DNS servers then they will be able to look it up via the IP of their public DNS.

It is possible to setup your outgoing smtp server statically on your website if you are comfortable with it. For setting up a static host name with your SMTP server on an internal address you'll need to use the cPanel of your web hosting control panel.