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This could be as simple as port 587 being blocked. Try using SMTP port 465. If you're sending encrypted messages, you may want to try port 25 as an encrypted SMTP connection to the server won't be of too much help further securing your communication.<br />
<br />
What is your current setup for sending e-mail? Do you use a local client like Outlook or Apple Mail?
</div>


This could be as simple as port 587 being blocked. Try using SMTP port 465. If you're sending encrypted messages, you may want to try port 25 as an encrypted SMTP connection to the server won't be of too much help further securing your communication.

What is your current setup for sending e-mail? Do you use a local client like Outlook or Apple Mail?

<div>
If you use an email client, it should work. However, if you are using the Gmail/SMIME addon for Firefox, which is the version you are using?
</div>


If you use an email client, it should work. However, if you are using the Gmail/SMIME addon for Firefox, which is the version you are using?

<div>
0.4.1 is the version l am using for Gmail/SMIME.<br />
<br />
I use Gmail for my business and personal communications and Outlook for my employer messages.<br />

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0.4.1 is the version l am using for Gmail/SMIME.

I use Gmail for my business and personal communications and Outlook for my employer messages.


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<div class="content wysiwyg-content">
I have a Thawte cert for sending encrypted messages via gmail, but I get the following error msg.<br />
<br />
&quot;Error: Your e-mail message was not sent successfully.<br />
<br />
The error message received was:<br />
<br />
NS_ERROR_NET_TIMEOUT: The server at smtp.google.com:587 is taking too long to respond.&quot;
</div>
</div>


I have a Thawte cert for sending encrypted messages via gmail, but I get the following error msg.

"Error: Your e-mail message was not sent successfully.

The error message received was:

NS_ERROR_NET_TIMEOUT: The server at smtp.google.com:587 is taking too long to respond."

s/mime gmail server times out...

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Encryption is the process of encoding messages or information in such a way that only authorized parties can read it. In an encryption scheme, the intended communication information or message, referred to as plaintext, is encrypted using an encryption algorithm, generating ciphertext that can only be read if decrypted. For technical reasons, an encryption scheme usually uses a pseudo-random encryption key generated by an algorithm. An authorized recipient can easily decrypt the message with the key provided by the originator to recipients, but not to unauthorized interceptors.