I can send mail from my C7 box (via sendmail) to myself at my gmail account using gmail's smtp server. I don't very often forward mail THRU gmail to other sites, so I don't know if that has changed. On Fri, Aug 5, 2022 at 11:14 AM Richard <lists-centos at listmail.innovate.net> wrote: > > > Date: Friday, August 05, 2022 10:39:04 -0400 > > From: Frank Bures <buresf at gmail.com> > > > > 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. > > I'm assuming you are pushing the mail to gmail through port 465 or > 587. If that's the case, if you aren't already, you will need to set > up and use a google "app password". Alternatively, get whatever you > are using on the centos side that authenticates with gmail to support > OAuth 2. > > You can no longer use your google side-wide password to authenticate > 3rd party apps with gmail so need to use one of the alternatives in > its place. > > I would actually expect you to get an authentication failure message > so they may have changed something else that disabled this approach. > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >