My original test in comment 60 with claws and tb clients was using my ISP (Spectrum). The easyname server must have Spectrum blacklisted since it responds to "rcpt to:" with "Sorry, you are spamming" and the actual message is never even sent. I then tried sending using just openssl and see exactly the same thing, i.e., fails on "rcpt to:" I then setup my wifi so it is tethered to my cell phone so my ISP's network is out of the picture. The cell phone network is AT&T. When I manually send the email using the tether, the "rcpt to:" works OK and I can sent the message successfully via openssl command line. However, this is only successful if I leave off the "SMTPUTF8" from the "mail from:" string. This works: ``` 220 mx.easyname.com ESMTP welcomes you. ehlo dude 250-mx.easyname.com Hello dude [107.112.218.190] 250-SIZE 104857600 250-8BITMIME 250-AUTH PLAIN LOGIN 250-CHUNKING 250-SMTPUTF8 250 HELP AUTH PLAIN AHRodW5kZXJiaXJkQGZhbWlsaWUtbGVpbmluZ2VyLmF0AG9ubHk0dGVzdA== 235 Authentication succeeded MAIL FROM:<Thunderbird@familie-leininger.at> BODY=8BITMIME SIZE=443 250 OK rcpt to: gds@chartertn.net 250 Accepted data 354 Enter message, ending with "." on a line by itself Subject: test test . 250 OK id=1lmkgY-0002dd-Oh ``` but this fails: ``` 220 mx.easyname.com ESMTP welcomes you. ehlo dude 250-mx.easyname.com Hello dude [107.112.218.190] 250-SIZE 104857600 250-8BITMIME 250-AUTH PLAIN LOGIN 250-CHUNKING 250-SMTPUTF8 250 HELP AUTH PLAIN AHRodW5kZXJiaXJkQGZhbWlsaWUtbGVpbmluZ2VyLmF0AG9ubHk0dGVzdA== 235 Authentication succeeded MAIL FROM:<Thunderbird@familie-leininger.at> BODY=8BITMIME SMTPUTF8 SIZE=443 250 OK rcpt to: gds@chartertn.net 250 Accepted data 354 Enter message, ending with "." on a line by itself Subject: test with smtputf8 test test test . 550 Sorry, this message is spam! ``` So definitely the SMTPUTF8 string is causing a problem for the easyname server.
Bug 1710224 Comment 67 Edit History
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My original test in comment 60 with claws and tb clients was using my ISP (Spectrum). The easyname server must have Spectrum blacklisted since it responds to "rcpt to:" with "Sorry, you are spamming" and the actual message is never even sent. I then tried sending using just openssl and see exactly the same thing, i.e., fails on "rcpt to:" I then setup my wifi so it is tethered to my cell phone so my ISP's network is out of the picture. The cell phone network is AT&T. When I manually send the email using the tether, the "rcpt to:" works OK and I can sent the message successfully via openssl command line. However, this is only successful if I leave off the "SMTPUTF8" from the "mail from:" string. This works: ``` 220 mx.easyname.com ESMTP welcomes you. ehlo dude 250-mx.easyname.com Hello dude [107.112.218.190] 250-SIZE 104857600 250-8BITMIME 250-AUTH PLAIN LOGIN 250-CHUNKING 250-SMTPUTF8 250 HELP AUTH PLAIN AHRodW5kZXJiaXJkQGZhbWlsaWUtbGVpbmluZ2VyLmF0AG9ubHk0dGVzdA== 235 Authentication succeeded MAIL FROM:<Thunderbird@familie-leininger.at> BODY=8BITMIME SIZE=443 250 OK rcpt to: gds@chartertn.net 250 Accepted data 354 Enter message, ending with "." on a line by itself Subject: test test . 250 OK id=1lmkgY-0002dd-Oh ``` but this fails: ``` 220 mx.easyname.com ESMTP welcomes you. ehlo dude 250-mx.easyname.com Hello dude [107.112.218.190] 250-SIZE 104857600 250-8BITMIME 250-AUTH PLAIN LOGIN 250-CHUNKING 250-SMTPUTF8 250 HELP AUTH PLAIN AHRodW5kZXJiaXJkQGZhbWlsaWUtbGVpbmluZ2VyLmF0AG9ubHk0dGVzdA== 235 Authentication succeeded MAIL FROM:<Thunderbird@familie-leininger.at> BODY=8BITMIME SMTPUTF8 SIZE=443 250 OK rcpt to: gds@chartertn.net 250 Accepted data 354 Enter message, ending with "." on a line by itself Subject: test with smtputf8 test test test . 550 Sorry, this message is spam! ``` So definitely the SMTPUTF8 string is causing a problem for the easyname server. See bug 1563891 comment 60