https://community.qlik.com/t5/Talend-Studio/SMTPSendFailedException-501-Invalid-MAIL-FROM-address-provided/m-p/2234468#M23824 Hi All, <BR />In SMPT host i'm using Host address name instead off IP address. <BR />Getting below error:&nbsp;501 Invalid MAIL FROM address provided. <BR />Thanks <BR />kumar.talend <BR />&nbsp; Thu, 26 Feb 2015 09:46:34 GMT Anonymous 2015-02-26T09:46:34Z https://community.qlik.com/t5/Talend-Studio/SMTPSendFailedException-501-Invalid-MAIL-FROM-address-provided/m-p/2234468#M23824 Hi All, <BR />In SMPT host i'm using Host address name instead off IP address. <BR />Getting below error:&nbsp;501 Invalid MAIL FROM address provided. <BR />Thanks <BR />kumar.talend <BR />&nbsp; Thu, 26 Feb 2015 09:46:34 GMT https://community.qlik.com/t5/Talend-Studio/SMTPSendFailedException-501-Invalid-MAIL-FROM-address-provided/m-p/2234468#M23824 Anonymous 2015-02-26T09:46:34Z https://community.qlik.com/t5/Talend-Studio/SMTPSendFailedException-501-Invalid-MAIL-FROM-address-provided/m-p/2234469#M23825 what is your "mail from" address?&nbsp; Is it of the form somebody@somewhere? Thu, 26 Feb 2015 15:12:08 GMT https://community.qlik.com/t5/Talend-Studio/SMTPSendFailedException-501-Invalid-MAIL-FROM-address-provided/m-p/2234469#M23825 Anonymous 2015-02-26T15:12:08Z