Hi @LeylaG As I collect e-mails from various accounts on mit Outlook 2013 to work offline, using webmail is a bad option. So if you can provide me the solution not to be blocked with Outlook2013 e-mailing to gmail, it would be great. I did no see anything specific on setting to do that. Maybe I missed it, in which case i would be greatful for a more precise reference to the solution. This being said, I sign all my e-mails sent by Bluewin with a valid certificate for my bluewin address. I suppose certificates are made to provide security and identification of the sender. Certified e-mnails should not be filteredby anti-spam or other "intelligent" method. Please pass this on and let me know if there is a chance for improvement on your side. Best Philippe
Final-recipient: rfc822; ...@gmail.com Diagnostic-Code: smtp; 550-5.7.1 [188.8.131.52 11] Our system has detected that this message is Last-attempt-Date: Sun, 02 Jul 2017 17:39:20 +0200 On https://mxtoolbox.com/domain/bluewin.ch/, the diagnosis of the bluewin.ch domain gives an error (DNS Record not found). This error might be the cause of the problem. Any idea howe to fix this?