Something that has happened to me now a few times is the credentials for my SMTP settings seems to become wrong. I am the only person that has access to the Settings and I know I haven't changed them each time this has happened to us. I have 2 factor auth enabled and it fails when it tries to send the code to the user. I then see the below error. As soon as I renter the password in the SMTP settings all is good and it is fixed. But does anyone have any ideas why this would keep happening? It is acting like it doesn't decrypt the password before sending it or something like that.
MailKit.Net.Smtp.SmtpCommandException: 5.7.1 Invalid credentials for relay . The IP address you've 5.7.1 registered in your G Suite SMTP Relay service doesn't match domain of 5.7.1 the account this email is being sent from. If you are trying to relay 5.7.1 mail from a domain that isn't registered under your G Suite account 5.7.1 or has empty envelope-from, you must configure your mail server 5.7.1 either to use SMTP AUTH to identify the sending domain or to present 5.7.1 one of your domain names in the HELO or EHLO command. For more 5.7.1 information, please visit
8 Answer(s)
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@joe704la could you share the full error message ?
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@ismcagdas here is the entire error.
ERROR 2018-09-20 06:05:00,027 [29 ] Mvc.ExceptionHandling.AbpExceptionFilter - 5.7.1 Invalid credentials for relay . The IP address you've 5.7.1 registered in your G Suite SMTP Relay service doesn't match domain of 5.7.1 the account this email is being sent from. If you are trying to relay 5.7.1 mail from a domain that isn't registered under your G Suite account 5.7.1 or has empty envelope-from, you must configure your mail server 5.7.1 either to use SMTP AUTH to identify the sending domain or to present 5.7.1 one of your domain names in the HELO or EHLO command. For more 5.7.1 information, please visit 5.7.1 https://support.google.com/a/answer/6140680#invalidcred v69-v6sm3914401qkg.1 - gsmtp MailKit.Net.Smtp.SmtpCommandException: 5.7.1 Invalid credentials for relay . The IP address you've 5.7.1 registered in your G Suite SMTP Relay service doesn't match domain of 5.7.1 the account this email is being sent from. If you are trying to relay 5.7.1 mail from a domain that isn't registered under your G Suite account 5.7.1 or has empty envelope-from, you must configure your mail server 5.7.1 either to use SMTP AUTH to identify the sending domain or to present 5.7.1 one of your domain names in the HELO or EHLO command. For more 5.7.1 information, please visit 5.7.1 https://support.google.com/a/answer/6140680#invalidcred v69-v6sm3914401qkg.1 - gsmtp at MailKit.Net.Smtp.SmtpClient.OnSenderNotAccepted(MimeMessage message, MailboxAddress mailbox, SmtpResponse response) at MailKit.Net.Smtp.SmtpClient.FlushCommandQueueAsync(MimeMessage message, MailboxAddress sender, IList`1 recipients, Boolean doAsync, CancellationToken cancellationToken) at MailKit.Net.Smtp.SmtpClient.SendAsync(FormatOptions options, MimeMessage message, MailboxAddress sender, IList`1 recipients, Boolean doAsync, CancellationToken cancellationToken, ITransferProgress progress) at MailKit.Net.Smtp.SmtpClient.SendAsync(FormatOptions options, MimeMessage message, MailboxAddress sender, IList`1 recipients, Boolean doAsync, CancellationToken cancellationToken, ITransferProgress progress) at Abp.MailKit.MailKitEmailSender.SendEmailAsync(MailMessage mail) at Abp.Net.Mail.EmailSenderBase.SendAsync(MailMessage mail, Boolean normalize) at Authorization.Users.UserEmailer.ReplaceBodyAndSend(String emailAddress, String subject, StringBuilder emailTemplate, StringBuilder mailMessage) in Authorization.Users.UserEmailer.SendEmailActivationLinkAsync(User user, String link, String plainPassword) in Core\Authorization\Users\UserEmailer.cs:line 125 at Abp.Threading.InternalAsyncHelper.AwaitTaskWithPostActionAndFinally(Task actualReturnValue, Func`1 postAction, Action`1 finalAction) at Authorization.Accounts.AccountAppService.SendEmailActivationLink(SendEmailActivationLinkInput input) in Application\Authorization\Accounts\AccountAppService.cs:line 116 at lambda_method(Closure , Object ) at Microsoft.AspNetCore.Mvc.Internal.ActionMethodExecutor.AwaitableResultExecutor.Execute(IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeActionMethodAsync() at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeNextActionFilterAsync() at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Rethrow(ActionExecutedContext context) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Internal.ControllerActionInvoker.InvokeInnerFilterAsync() at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextExceptionFilterAsync() -
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google says;
The IP address you registered in the G Suite SMTP relay service setting doesn’t match domain of the account this email is being sent from. If you are trying to relay mail from a domain that isn’t registered in your Googles Apps account, you must configure your mail server either to use SMTP AUTH to identify the sending domain or to present one of your domain names in the HELO or EHLO command. See SMTP Relay service setting for more information.
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@alper I know that is what it says. But as soon as I renter the password into our sites settings all is good even without doing anything at all to G Suite. That would make me believe it has something to do with something is messing up the password and its sending the wrong password so it can't authenticate. If it had something to do with the IP address I would think it would completely fail until I went into G Suite admin settings and fix it.
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@joe704la email password is updated here https://github.com/aspnetzero/aspnet-zero-core/blob/dev/aspnet-core/src/MyCompanyName.AbpZeroTemplate.Application/Configuration/Host/HostSettingsAppService.cs#L315.
And the password is retrieved back here https://github.com/aspnetzero/aspnet-zero-core/blob/dev/aspnet-core/src/MyCompanyName.AbpZeroTemplate.Core/Emailing/AbpZeroTemplateSmtpEmailSenderConfiguration.cs#L15.
Have you assigned a custom value to SimpleStringCipher.DefaultPassPhrase ? If so, it might cause the problem.
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use this basic application to test your settings to see if it works or not. http://www.alexnolan.net/software/SMTPProber.htm
run it on the same computer that your website in.
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@ismcagdas I did change the DefaultPassPhrase yes. I figured that if I was the only one that knew that default passphrase it would be more secure. Why would it mess things up?
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@joe704la the
DefaultPassPhraseinSimpleStringCipherdoes not get overriden byAppConsts.DefaultPassPhrase.It is using the defalut passphase if customer passphrase is not passed in when calling the method. See SimpleStringCipher
You can use the workaround here first.
