At this Google support url there are eight different reasons that could apply to the error "550 5.7.1".
https://support.google.com/a/answer/3726730?hl=en HTH Peter -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Charles Mills Sent: Sunday, December 11, 2022 4:22 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Why email from z/OS SMTP rejected by Gmail? Thanks all! Let's see if I can do one big reply. > Difficult to avoid HTML Yeah, with some re-programming (see next answer) I could go to HTML Not the best use of my time, but I can do that. > Did I try the HTML? Yes, If I add the following to the e-mail then GMail accepts it. "Mime-Version: 1.0;" 'Content-Type: text/html; charset="ISO-8859-1";' "Content-Transfer-Encoding: 7bit;" " " /* Watch out -- null lines kill EXECIO */ But that screws up the formatting of the email because it becomes flow-together HTML rather than individual monospaced lines. (Does what I am saying make sense?) > Service bureau ... It is an LPAR on a service bureau machine. I have complete control over the LPAR, but it is talking to some SMTP gateway that I do not control. I am not an SMTP expert ... > @Phil ... Thanks for the link. Duh. I did not think to Google the error. But lots of complainers there; no resolution that i saw. > I would suspect a need to further configure due to some newer gmail > requirements Me too, but what? Charles -- This message and any attachments are intended only for the use of the addressee and may contain information that is privileged and confidential. If the reader of the message is not the intended recipient or an authorized representative of the intended recipient, you are hereby notified that any dissemination of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by e-mail and delete the message and any attachments from your system. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
