Authentication Error SOMEtimes?

  • Resolved wbenterprises

    (@wbenterprises)


    2 years, 3 months ago

    I have an error log which shows four emails being sent at the same time.

    Two of them failed due to authentication, but two of them did not. What could be causing this failure rate? Going back in my log, I see that it happens too frequently. It doesn’t seem to matter which plugin is sending the email. Could you assist in understanding what the root cause may be, please?

    Again, this doesn’t happen every time, it’s only happening SOMEtimes…

    Debug log shows this:

    Mailer: Other SMTP
    SMTP Error: Could not authenticate.
    Debug Output:
    Connection: opening to smtp.hostinger.com:587, timeout=300, options=array()
    Connection: opened
    SERVER -> CLIENT: 220 ESMTP smtp.hostinger.com
    CLIENT -> SERVER: EHLO [mydomain is here]
    SERVER -> CLIENT: 250-smtp.hostinger.com
    250-PIPELINING
    250-SIZE 48811212
    250-ETRN
    250-STARTTLS
    250-AUTH PLAIN LOGIN
    250-ENHANCEDSTATUSCODES
    250-8BITMIME
    250 DSN
    CLIENT -> SERVER: STARTTLS
    SERVER -> CLIENT: 220 2.0.0 Ready to start TLS
    CLIENT -> SERVER: EHLO [mydomain is here]
    SERVER -> CLIENT: 250-smtp.hostinger.com
    250-PIPELINING
    250-SIZE 48811212
    250-ETRN
    250-AUTH PLAIN LOGIN
    250-ENHANCEDSTATUSCODES
    250-8BITMIME
    250 DSN
    CLIENT -> SERVER: AUTH LOGIN
    SERVER -> CLIENT: 454 4.7.0 Temporary authentication failure: Connection lost to authentication server
    SMTP ERROR: AUTH command failed: 454 4.7.0 Temporary authentication failure: Connection lost to authentication server
    SMTP Error: Could not authenticate.
    CLIENT -> SERVER: QUIT
    SERVER -> CLIENT: 221 2.0.0 Bye
    Connection: closed
    SMTP Error: Could not authenticate.

Viewing 3 replies - 1 through 3 (of 3 total)
  • Plugin Support Darshana

    (@darshanaw)

    Hi @wbenterprises,

    Thanks for reaching out! According to your debug log, the SMTP connection lost when authenticating your email account. This means your email server is not responding properly when your website is sending emails.

    Please get in touch with your hosting support with the full error log, and they should be able to assist you further.

    I hope this helps. Thanks!

    Thread Starter wbenterprises

    (@wbenterprises)

    I have been TRYING to work with my provider on this issue, but they are INSISTING it is not their server. They claim it is my credentials or the plug-in. However, my emails are sending about 90% of the time. Here is the error using SSL instead of TLS:

    Mailer: Other SMTP
    SMTP Error: Could not authenticate.
    Debug Output:
    Connection: opening to ssl://smtp.hostinger.com:465, timeout=300, options=array()
    Connection: opened
    SERVER -> CLIENT: 220 ESMTP smtp.hostinger.com
    CLIENT -> SERVER: EHLO [redacted]
    SERVER -> CLIENT: 250-smtp.hostinger.com
    250-PIPELINING
    250-SIZE 48811212
    250-ETRN
    250-AUTH PLAIN LOGIN
    250-ENHANCEDSTATUSCODES
    250-8BITMIME
    250-DSN
    250 CHUNKING
    CLIENT -> SERVER: AUTH LOGIN
    SERVER -> CLIENT: 454 4.7.0 Temporary authentication failure: Connection lost to authentication server
    SMTP ERROR: AUTH command failed: 454 4.7.0 Temporary authentication failure: Connection lost to authentication server
    SMTP Error: Could not authenticate.
    CLIENT -> SERVER: QUIT
    SERVER -> CLIENT: 221 2.0.0 Bye
    Connection: closed
    SMTP Error: Could not authenticate.

    Could you please shed more light on this issue and what the error means?

    Recent logs:

Event #4929	Debug	An email request was sent.	Ultimate Member	19-August-2022 at 1:21 pm
Event #4928	Debug	An email request was sent.	Ultimate Member	19-August-2022 at 1:21 pm
Event #4927	Debug	An email request was sent.	Ultimate Member	19-August-2022 at 1:21 pm
Event #4926	Debug	An email request was sent.	WP Core	19-August-2022 at 10:22 am
Event #4925	Debug	An email request was sent.	WP Core	19-August-2022 at 10:17 am
Event #4924	Debug	An email request was sent.	WP Core	19-August-2022 at 10:16 am
Event #4923	Debug	An email request was sent.	WP Core	19-August-2022 at 10:16 am
Event #4922	Debug	An email request was sent.	myCred	19-August-2022 at 10:12 am
Event #4921	Debug	An email request was sent.	myCred	19-August-2022 at 10:04 am
Event #4920	Debug	An email request was sent.	Ultimate Member	19-August-2022 at 9:14 am
Event #4919	Debug	An email request was sent.	Ultimate Member	19-August-2022 at 9:14 am
Event #4918	Debug	An email request was sent.	Ultimate Member	19-August-2022 at 9:14 am
Event #4917	Debug	An email request was sent.	Ultimate Member	19-August-2022 at 5:40 am
Event #4916	Debug	An email request was sent.	Ultimate Member	19-August-2022 at 5:39 am
Event #4915	Debug	An email request was sent.	Ultimate Member	19-August-2022 at 5:39 am
Event #4914	Debug	Mailer: Other SMTP SMTP Error: Could not authenticate. Debug Output: Connection: opening to ssl:/...	myCred	18-August-2022 at 9:43 pm
Event #4913	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	myCred	18-August-2022 at 9:43 pm
Event #4912	Debug	An email request was sent.	Ultimate Member	18-August-2022 at 9:41 pm
Event #4911	Debug	An email request was sent.	Ultimate Member	18-August-2022 at 9:40 pm
Event #4910	Debug	An email request was sent.	Ultimate Member	18-August-2022 at 9:40 pm
Event #4909	Debug	Mailer: Other SMTP SMTP Error: Could not authenticate. Debug Output: Connection: opening to ssl:/...	myCred	18-August-2022 at 5:16 am
Event #4908	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	myCred	18-August-2022 at 5:16 am
Event #4907	Debug	An email request was sent.	Ultimate Member	18-August-2022 at 4:59 am
Event #4906	Debug	An email request was sent.	Ultimate Member	18-August-2022 at 4:59 am
Event #4905	Debug	An email request was sent.	Ultimate Member	18-August-2022 at 4:59 am
Event #4904	Debug	An email request was sent.	Ultimate Member	18-August-2022 at 4:32 am
Event #4903	Debug	An email request was sent.	Ultimate Member	18-August-2022 at 4:32 am
Event #4902	Debug	An email request was sent.	Ultimate Member	18-August-2022 at 4:32 am
Event #4901	Debug	An email request was sent.	myCred	17-August-2022 at 1:05 pm
Event #4900	Debug	An email request was sent.	myCred	17-August-2022 at 10:59 am

Just the recent (filtered) error logs:

Event #4913	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	myCred	18-August-2022 at 9:43 pm
Event #4908	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	myCred	18-August-2022 at 5:16 am
Event #4856	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	Ultimate Member	13-August-2022 at 11:12 pm
Event #4847	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	WP Mail SMTP	13-August-2022 at 12:24 pm
Event #4841	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	Ultimate Member	12-August-2022 at 3:11 pm
Event #4835	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	Ultimate Member	12-August-2022 at 5:09 am
Event #4832	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	Ultimate Member	11-August-2022 at 10:13 pm
Event #4828	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	myCred	11-August-2022 at 7:04 pm
Event #4824	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	myCred	11-August-2022 at 5:54 pm
Event #4798	Error	Mailer: Other SMTP SMTP Error: Could not authenticate.	myCred	10-August-2022 at 1:04 am
    Plugin Support Darshana

    (@darshanaw)

    Hi @wbenterprises,

    I apologize for the trouble! As you can see within the error message, connection lost to authentication server this is an intermittent connection issue.

    In that case, try configuring an alternative mailer on your site.

    You can see all the available mailers from here and configure a mailer of your choice.

    I hope this helps!

Viewing 3 replies - 1 through 3 (of 3 total)
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