Can't Use External SMTP Server

larryf85248

I've tried three different external SMTP servers. I can't send a test email to any of them via AcyMailing. On all three, I get a "SMTP Connection Failed" error. Specifically, I get "SMTP ERROR: Password command failed: 535 Incorrect authentication data". Same error on all three. I know I have the correct SMTP server settings, SMTP username, and SMTP password. I am using port 587 and have verified this port is available to AcyMailing.

I can connect and send email from other applications to the external SMTP server, but not via AcyMailing. I verified with my ISP that I can use any SMTP server. I've tried using Elastic Email, SendGrid, and now Amazon SES. All three external SMTP servers return the same SMTP error.

Here's the return SMTP log:

SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting

2020-08-06 20:29:10 CLIENT -> SERVER: EHLO www.militarycampgrounds.us

2020-08-06 20:29:10 CLIENT -> SERVER: STARTTLS

2020-08-06 20:29:10 CLIENT -> SERVER: EHLO www.militarycampgrounds.us

2020-08-06 20:29:10 CLIENT -> SERVER: AUTH LOGIN

2020-08-06 20:29:10 CLIENT -> SERVER: <credentials hidden>

2020-08-06 20:29:12 SMTP ERROR: Password command failed: 535 Incorrect authentication data

2020-08-06 20:29:12 CLIENT -> SERVER: QUIT

Help - Thoughts?
Thanks!
Larry

jvstratum

Hi,

Please rais a support ticket for this (https://www.acymailing.com/contact/) and include login credentials for your backend and a link to this thread.

larryf85248

Sent the information to you.

plexa

Hi!

I have problems to use external smtp too. I use sendgrid as smtp and get the error message:

SMTP connect() failed. https://github.com/PHPMailer/PHPMailer/wiki/Troubleshooting
2020-12-15 11:54:59 SMTP ERROR: Failed to connect to server: Connection refused (111)

When I click on "Which port can I use from my website?" I got the errors:

The port 25 is not opened on your server: 110 - Connection timed out
The port 2525 is not opened on your server: 110 - Connection timed out
The port 587 is not opened on your server: 110 - Connection timed out
The port 465 is not opened on your server: 110 - Connection timed out

jvstratum

plexa

Please contact your webhost about this, they can assist you to open one or more ports.

Guilherme

I am having the exact same error message:
SMTP ERROR: Password command failed: 535 Incorrect authentication data
And I even created a new user/password over AWS SES just to make sure I had the correct credentials and it did not help.
Any thoughts?
Tks!

jvstratum

Guilherme

This is an issue with the Amazon account you are using. It may be best to reach out to their customer service team to check their logs and resolve the issue.

Also, I kindly request that in the future, you create a new thread instead of posting in an old one. This helps to prevent confusion and ensure that your question is seen by the appropriate parties.