Just a couple days ago my website stopped sending emails for PM's and all that fancy stuff.

I am using a gmail account to send emails. The error I am receiving is

HELO (using: HELO)
501 501-5.5.4 HELO/EHLO argument ssl://smtp.gmail.com:465 invalid, closing 501 5.5.4 connection. k139sm4490919ioe.42 - gsmtp

I have tried 

tls://smtp.gmail.com:465

tls://smtp.gmail.com:587

tls://smtp.gmail.com

ssl://smtp.gmail.com:465

ssl://smtp.gmail.com:587

ssl://smtp.gmail.com

All with 465 and 587 ports.

Override SMTP host Default is 'localhost' Revert
	Override SMTP port	Default is 25	Revert
	Add '<' and '>' to 'to' and 'from' addresses	YesNo Some SMTP mailers require that email addresses are in the following format '<' address '>' (no quotes). If you are getting errors in the mail error log, enabled this option	Revert
	SMTP username	Not required in most cases when using 'localhost'
	SMTP password	Not required in most cases when using 'localhost'
	Enhanced SMTP HELO	HELO EHLO   Select which identification clause you need to use with your SMTP server.

It's definitly this....working just fine for me, hasn't changed in ages:

Host: tls://smtp.gmail.com

Port: 587

HELO: set to EHLO only.

When I use port 587 I get this in the email error log

Could not open a socket to the SMTP server (0:)

Have you discussed with your host yet? Assuming that "Just a couple days ago" you've made no changes to cause this, then it would be a good idea to ask them if they've made any changes that could cause your server to be unable to communicate with tls://smtp.gmail.com on port 587,

I haven't said anything to the host yet. Wanted to verify that it wasn't my fault first. Nothing has changed on the website side of things.

Ok - next step is talk to host...if you've made no changes, then that's the logical step. My gmail set up is working fine, and I think the last time I changed things there was well over a year ago.

7 hours ago, IndianaJoe said:

I haven't said anything to the host yet. Wanted to verify that it wasn't my fault first. Nothing has changed on the website side of things.

In classEmail.php, change this line:

this->_smtpSendCmd( "{$this->smtp_helo} " . $this->smtp_host );

to this:

$this->_smtpSendCmd( "{$this->smtp_helo} " . str_replace("tls://", "", $this->smtp_host) );

The email isn't being sent because Google is now rejecting the HELO message for having "tls://" in it, although in the IPBoard settings the "tls://" is needed to make the connection to Google's server in the first place.  Going off the error message, I figured this was the problem and stripped "tls://" off the hostname.  May not apply to newer versions of IPS.

Thanks that looks to have fixed it!

You get a gold star for the day!

This worked for us:

 

On 4/1/2016 at 11:03 PM, Private55555 said:

In classEmail.php, change this line:

this->_smtpSendCmd( "{$this->smtp_helo} " . $this->smtp_host );

to this:

$this->_smtpSendCmd( "{$this->smtp_helo} " . str_replace("tls://", "", $this->smtp_host) );

The email isn't being sent because Google is now rejecting the HELO message for having "tls://" in it, although in the IPBoard settings the "tls://" is needed to make the connection to Google's server in the first place.  Going off the error message, I figured this was the problem and stripped "tls://" off the hostname.  May not apply to newer versions of IPS.

I've tested it and it seems to work fine, thanks!

Not sure if this will help anyone in the future that stumbles across this thread. I had been using ssl forever with gmail. About 7 days ago it stopped working. I changed it to tls in the settings in the ACP and it works fine now. Not sure why it changed but it was an easy fix.