It appears that Paul Menzel via mailop <pmen...@molgen.mpg.de> said: > The following message to<y...@gmail.com> was undeliverable. > The reason for the problem: > 5.3.0 - Other mail system problem 550-'5.7.26 This mail has been >blocked because the sender is unauthenticated.\n5.7.26 Gmail requires >all senders to authenticate with either SPF or DKIM.\n5.7.26 \n5.7.26
As others said, SPF or DKIM has to pass. The easiest workaround is to put your own enveope address on forwarded mail, e.g. forwar...@molgen.mpg.de and that will often be enough to make Gmail accept it. >message, when another server is sending emails from @molgen.mpg.de. We >do not want to set up DKIM due to the increased message size, and >complexity of key handling. Is there an alternative? Um, find someone with the modest skills needed to do DKIM signing? I'm with Atro, the message size argument is silly, and the key management is not that hard. I'm sure I'm not the only one-person shop here who does it all by myself. R's, John _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop