Am 05.08.22 um 16:39 schrieb Frank Bures: > Hi, > > I have my CentOS7 sendmail configured to relay outgoing system e-mail > through my gmail account. > > The setup recently stopped working. Gmail SMTP keeps returning "service > unavailable". > > I think it has something to do with the recent changes in Gmail > authentication procedures. > > Does anyone know how to make the relaying work again? I could not find > anything on the Net. > https://developers.google.com/gmail/imap/xoauth2-protocol -- Leon