![Reported error 550 5.0.350 Remote server returned an error ->550 #5.1.0 Address rejected, - Gmail Community Reported error 550 5.0.350 Remote server returned an error ->550 #5.1.0 Address rejected, - Gmail Community](https://storage.googleapis.com/support-forums-api/attachment/thread-65686967-10907125944471249385.jpg)
Reported error 550 5.0.350 Remote server returned an error ->550 #5.1.0 Address rejected, - Gmail Community
![Freeman: Corriger l'erreur "550 5.1.1 User unknown" lors l'envoi d'un mail à un groupe de distribution Freeman: Corriger l'erreur "550 5.1.1 User unknown" lors l'envoi d'un mail à un groupe de distribution](https://2.bp.blogspot.com/-aO7RfLkNToc/WB-nBBaW9SI/AAAAAAAAVKU/uhCZvFVCFTEevdPI_rJ2uBkwCYDFsp_pQCLcB/s1600/S%25C3%25A9lection_126.jpg)
Freeman: Corriger l'erreur "550 5.1.1 User unknown" lors l'envoi d'un mail à un groupe de distribution
![Comment résoudre l'erreur '550 5.1.1 User Unknown' ? - Aide SafeBrands : Noms de domaine, Hébergement, TMCH, SSL & Protection de marques Comment résoudre l'erreur '550 5.1.1 User Unknown' ? - Aide SafeBrands : Noms de domaine, Hébergement, TMCH, SSL & Protection de marques](https://support.safebrands.com/wp-content/uploads/logoSAFBRANDS-2018-EN-e1525369499187.png)
Comment résoudre l'erreur '550 5.1.1 User Unknown' ? - Aide SafeBrands : Noms de domaine, Hébergement, TMCH, SSL & Protection de marques
![Erreur SMTP 550 5.1.1 : Recipient address rejected : User unknown in virtual mailbox table - Support apps - YunoHost Forum Erreur SMTP 550 5.1.1 : Recipient address rejected : User unknown in virtual mailbox table - Support apps - YunoHost Forum](https://forum.yunohost.org/uploads/default/original/2X/e/ed471f169dd0cd819c7df7a2019c84d259fbe8bd.png)
Erreur SMTP 550 5.1.1 : Recipient address rejected : User unknown in virtual mailbox table - Support apps - YunoHost Forum
![Fix email delivery issues for error code 550 5.1.1 through 5.1.20 in Exchange Online | Microsoft Learn Fix email delivery issues for error code 550 5.1.1 through 5.1.20 in Exchange Online | Microsoft Learn](https://learn.microsoft.com/en-us/exchange/exchangeonline/media/409b56f4-1a7f-417e-94cf-9a058ac851d4.png)
Fix email delivery issues for error code 550 5.1.1 through 5.1.20 in Exchange Online | Microsoft Learn
![Freeman: Corriger l'erreur "550 5.1.1 User unknown" lors l'envoi d'un mail à un groupe de distribution Freeman: Corriger l'erreur "550 5.1.1 User unknown" lors l'envoi d'un mail à un groupe de distribution](https://1.bp.blogspot.com/-ISBvBw4a8ss/WB-nKWI4RYI/AAAAAAAAVKc/DL-zqSK3ccUsZQp88SvOsGlO33-YCmUiQCLcB/s1600/S%25C3%25A9lection_128.jpg)
Freeman: Corriger l'erreur "550 5.1.1 User unknown" lors l'envoi d'un mail à un groupe de distribution
![Erreur SMTP 550 5.1.1 : Recipient address rejected : User unknown in virtual mailbox table - Support apps - YunoHost Forum Erreur SMTP 550 5.1.1 : Recipient address rejected : User unknown in virtual mailbox table - Support apps - YunoHost Forum](https://forum.yunohost.org/uploads/default/original/2X/1/10f4df0f526c159f52dee4ddeab0fcc5c1e13f44.png)
Erreur SMTP 550 5.1.1 : Recipient address rejected : User unknown in virtual mailbox table - Support apps - YunoHost Forum
![Unable to send email from Plesk server using Outlook as mail client: 554 5.7.1: Client host rejected: Access denied – Plesk Help Center Unable to send email from Plesk server using Outlook as mail client: 554 5.7.1: Client host rejected: Access denied – Plesk Help Center](https://support.plesk.com/hc/article_attachments/360003438154/Screenshot_2.png)