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We recently switched from swiftmailer to symfony_mailer_lite in Drupal CMS. However, we are experiencing some random SMTP errors since the switch. The main error we are encountering is a timed-out error:
"An attempt to send an e-mail message failed, and the following error message was returned: Connection to "smtp-server.com:587" timed out."
Today, we received a new error just once at around the same time with above error:
"An attempt to send an e-mail message failed, and the following error message was returned: Expected response code "354" but got code "250", with message "250 Recipient OK".
The initial error was different during symphony/mailer version 6.4.3, but it's not happening anymore:
"An attempt to send an e-mail message failed, and the following error message was returned: Failed to authenticate on SMTP server with username "username@domain.com using the following authenticators: "LOGIN", "PLAIN". Authenticator "LOGIN" returned "Connection to "smtp-server.com:587" timed out.". Authenticator "PLAIN" returned "Expected response code "235" but got code "250", with message "250 Transaction Reset OK.""
We are facing this issue once or twice a day.
Could you please advise us on any possible solutions for this problem?
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Hello all
We are using symphony/mailer version 6.4.6. https://packagist.org/packages/symfony/mailer
We recently switched from swiftmailer to symfony_mailer_lite in Drupal CMS. However, we are experiencing some random SMTP errors since the switch. The main error we are encountering is a timed-out error:
"An attempt to send an e-mail message failed, and the following error message was returned: Connection to "smtp-server.com:587" timed out."
Today, we received a new error just once at around the same time with above error:
"An attempt to send an e-mail message failed, and the following error message was returned: Expected response code "354" but got code "250", with message "250 Recipient OK".
May be related: #54169
The initial error was different during symphony/mailer version 6.4.3, but it's not happening anymore:
"An attempt to send an e-mail message failed, and the following error message was returned: Failed to authenticate on SMTP server with username "username@domain.com using the following authenticators: "LOGIN", "PLAIN". Authenticator "LOGIN" returned "Connection to "smtp-server.com:587" timed out.". Authenticator "PLAIN" returned "Expected response code "235" but got code "250", with message "250 Transaction Reset OK.""
We are facing this issue once or twice a day.
Could you please advise us on any possible solutions for this problem?
Thank you.
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