# Error while using emai DSN on mautic **URL:** \ **Category:** Mautic 5 Install/Upgrade Support\ **Created:** [April 26, 2024, 12:13pm UTC](https://forum.mautic.org/t/error-while-using-emai-dsn-on-mautic/31870 "2024-04-26T12:13:59Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![khelmerrah](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/khelmerrah/32/11896_2.png) [@khelmerrah](https://forum.mautic.org/u/khelmerrah)\ **Post date:** [April 26, 2024, 12:13pm UTC](https://forum.mautic.org/t/error-while-using-emai-dsn-on-mautic/31870/1 "2024-04-26T12:13:59Z")
**Your software** My Mautic version is: v5.0.4 My PHP version is: 8.1 My Database type and version is: mysql **Your problem** My problem is: I just installed Mautic through Softaculous installer, it didn’t ask for any smtp, but now i can’t find any way to connect it other than trying this new Email DSN in the email settings area. ![Screenshot 2024-04-26 124040](https://us1.discourse-cdn.com/flex020/uploads/mautic/original/2X/e/ecb1a2f2b99fb5c32f222d186d0ef1ed92fbd05c.png) These errors are showing in the log: Expected response code “250” but got code “554”, with message “554 5.9.2 Sender domain is not valid.”. Steps I have tried to fix the problem: tried ssl/tls, checked password, chaned from:email ---
**Author:** ![bunce69](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/bunce69/32/143_2.png) [@bunce69](https://forum.mautic.org/u/bunce69)\ **Post date:** [June 8, 2024, 5:17pm UTC](https://forum.mautic.org/t/error-while-using-emai-dsn-on-mautic/31870/2 "2024-06-08T17:17:31Z")
+1 - I need help the same with postmark. ---
**Author:** ![peter\_k](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mautic.org/peter_k/32/511_2.png) [@peter\_k](https://forum.mautic.org/u/peter_k)\ **Post date:** [June 9, 2024, 7:38am UTC](https://forum.mautic.org/t/error-while-using-emai-dsn-on-mautic/31870/3 "2024-06-09T07:38:18Z")
> [@khelmerrah](#): > > 554 There might be a problem with your password. If it contains a special character it’ll cause problems ATM: > **[Mautic 5: Key Gotchas and How to Navigate Them](https://audienture.com/mautic-5-key-gotchas-and-how-to-navigate-them/#special-characters-in-mailerdsn)** > > Long awaited Mautic 5 is finally here 🥳 Ready to install? > > Mautic 5 comes with some significant changes. Because of at least one you might want to wait for a bit before you update—as you could, for example, accidentally destroy your sender... Relevant GitHub issues: > > > \### Mautic Version > > 4.4.x series > > \### PHP version > > 8.0 > > \### What browsers are yo…u seeing the problem on? > > Not relevant > > \### What happened? > > Pretty simple, but hard to find: if Amazon AWS SES defines a secret / password that contains a "/" it will lead to an authorization error with the plattform. The error message: > > \`Error executing "GetAccount" on "https://email.eu-central-1.amazonaws.com/v2/email/account"; AWS HTTP error: Client error: \`GET https://email.eu-central-1.amazonaws.com/v2/email/account\` resulted in a \`403 Forbidden\` response: {"message":"The request signature we calculated does not match the signature you provided. Check your AWS Secret Access (truncated...) InvalidSignatureException (client): The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details. - {"message":"The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details."}\` > > The problem: AWS assigns the password randomly, often it contains a "/". You can only delete the just created key and create a new one - hoping this time its without the "special" character. > > \### How can we reproduce this issue? > > Step 1: Connect with Amazon SES API with a password, that contains a "/" > Step 2: Save and test the connection - it will throw this error. > Step 3: Back to AWS and get another key assigned. It it has no "/" it will work. > > \### Relevant log output > > \`\`\`shell > \`Error executing "GetAccount" on "https://email.eu-central-1.amazonaws.com/v2/email/account"; AWS HTTP error: Client error: \`GET https://email.eu-central-1.amazonaws.com/v2/email/account\` resulted in a \`403 Forbidden\` response: {"message":"The request signature we calculated does not match the signature you provided. Check your AWS Secret Access (truncated...) InvalidSignatureException (client): The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details. - {"message":"The request signature we calculated does not match the signature you provided. Check your AWS Secret Access Key and signing method. Consult the service documentation for details."}\` > \`\`\` > > > \### Code of Conduct > > \- \[X\] I confirm that I have read and agree to follow this project's Code of Conduct > > \ > > \--- > Want to back this issue? \*\*\[Post a bounty on it!\](https://app.bountysource.com/issues/121828581-connection-with-amazon-ses-api-won-t-work-error403-when-the-defined-password-contains-a?utm\_campaign=plugin&utm\_content=tracker%2F5355074&utm\_medium=issues&utm\_source=github)\*\* We accept bounties via \[Bountysource\](https://app.bountysource.com/?utm\_campaign=plugin&utm\_content=tracker%2F5355074&utm\_medium=issues&utm\_source=github). > \ > > > \### Mautic Version > > 5.0.x series > > \### PHP version > > 8.1 > > \### What browsers are yo…u seeing the problem on? > > Not relevant > > \### What happened? > > I believe there is a problem in setting up the queue for email using Amazon SQS. If I get a secret\_key that includes any special character i.e. / o + then at the moment the secret is retrieved a % is appended to this character (in the config/local.php), even after parsing it gets the wrong secret to the SQS and obviously it doesnt verify. > Workaround: try to get secret\_key without special characters. > > \### How can we reproduce this issue? > > Configure sqs scheme in the queue, use any special character in the secret > > Scheme: sqs > Host: default > Port: empty > Path: empty > User: empty > Password: empty > Options: > access\_key: (amazon access key) > account: (amazon account) > auto\_setup: false > queue\_name: (name of the queue) > secret\_key: (amazon secret key) > region: us-east-1 > > \### Relevant log output > > \_No response\_ > > \### Code of Conduct > > \- \[X\] I confirm that I have read and agree to follow this project's Code of Conduct > > \
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