SMTP Mailer not working

I had that problem before with 7.2 and now with 7.3 again.

I open SMTP Mailer Module. Now I enter my login data and credentials and make a test with the SMTP Mailer tester at the bottom of the site. And now the strange part:

If I check "Enable SMTP mailer" on top of the page, I get an error "Mail not sent". If I uncheck "Enable SMTP Mailer", I get "Mail successfully sent". The funny part is, even if I change my login or smtp server and enter something wrong, and save this, I also get "Email successfully sent" (if SMTP mailer is not enabled). But if I look at my inbox, email has not been sent, sure not, wrong credentials.

If I send that test email with the correct SMTP credentials, the email goes inbox.

The problem now is, that I need the SMTP Mailer Module. But without checking "Enable", its not enabled. And if I check "Enable", its not working. I made a test registration with enabled SMTP mailer and get: "Joining process has been completed. E-mail has NOT been sent. Unfortunately we could not send the confirmation e-mail. Please, try again later. We appologize for any inconvenience."

I am using your recommended TMDHosting with Dolphin Hosting Plan. They say, its not a server / hosting problem.

Any help would be great.

Which mail host are you using with the SMTP module.

Hi.

I use https://www.smtp2go.com/

but I also tested with

https://www.mail.com

Same problem with both. I also tested a lot of PORT/SSL/TLS combinations. But as I wrote, if I uncheck "enable" the test is working, if I check "enable" not.

PS: Which are you using? I can test if its working here.

I host my own mail server; however, I have been thinking of switching to the SMTP module and use Gmail because no one blocks Google.  My issues with running my own mail server is fighting with other mail hosts; such as AT&T that blocks my mail server even though I have everything in place and I don't spam.  The fucking Spamhaus bastards blocks ranges of IP instead of individual IPs meaning it is easy to get included.  Spamhaus needs oversight and regulating; it is stupid to block whole ranges of IPs when it should be only the offending IP address but it is just easier for Spamhaus.

Spamhaus don't care how many IP ranges they burn. They are mafia.

But I am really interested in some one here who uses SMTP Mailer module. Successfully. I think that SMTP Mailer behavior is pretty funny here. Wonder if some one really tested it?

Yes, there are people using the SMTP mailer to handle their Dolphin mail; have you search the forum?

Yes I searched the forum and the web. I always do before I ask. No success with my problem.

 
If the SMTP Mailer is not checked, then mail is sent by the internal settings of the php mailer built into php which your host sets up to use it's mail server.

That's because the smtp mailer is not enabled, so it does not matter what you set those settings to, it's it's not enabled, then it's not using those, it's using the built in php mail system.

It says it was sent, so it was. It does not necessarily mean it will appear in your inbox. If your using a email system that has a spam filtering system, then it could be in the spam folder, or maybe even sent directly to trash. Either way, it was sent.

So it boils down to this. The SMTP mailer is only used, and the settings in there only used if the SMTP mailer is enabled. If when enabled the mail is not being sent, then it's one of two things, either the credentials used are incorrect, or the SMTP server is not allowing you to use them as your gateway. I had it working with google before, so i know it works, but google sometimes stops accepting email from my domain to be sent through it's servers. So it's unreliable when used for google. The 2 servers you have tried may be doing the same thing. In any case, the smtp mailer does work when properly configured and the server your attempting to use is also allowing it. Thats the key, both conditions have to be met for it to work.

I was using it for nearly a year on the free smtp mail service offered by mandrill before they became a paid addon for mailchimp only. So i know it works when both setup properly and the smtp server is allowing the connections.

Thanks Deano for the Google Info.  Trying to get mail servers from some providers to let me send mail to my members is frustrating, since I am a small organisation, most times they just ignore me when I request removing from their blacklist.  I was thinking Gmail might be the answer but maybe not.

Things have (had) to change with port 25 SMTP relay provision due to ciphers recently. Many providers are now not accepting strong ciphers on port 25 (effectively stopping port 25 SMTP AUTH support for outbound relays). Strong ciphers are supported on ports 587 and 465.

This change recently occurred on MailShark's Anti-Spam filtering service, although primarily for Email filtering, the SMTP Relay settings needed to change from port 25 to 587 to allow the outbound relay to work again (and to continue to use strong ciphers). This may be the same for your SMTP provider.

ran into all the same problems years ago.

send test mail to: check-auth@verifier.port25.com and you should get a auto reply with diagnostic information.

https://www.port25.com/support/authentication-center/email-verification/

depending on the volume of emails you might need to run your own emails server.

Hi.

Thank you all so much for your help.

I figured out the problem.

That field was blank, and that ESP's can't handle mails with blank sender email address:

"Override Default Sender Email Address"