MailChip debugged. Quality improvement of 600 million emails every day:
$ postconf | fgrep strict_ strict_7bit_headers = yes strict_8bitmime = yes strict_8bitmime_body = yes strict_mailbox_ownership = yes strict_mime_encoding_domain = yes strict_rfc821_envelopes = yes ----- Forwarded message ----- Date: Tue, 02 Jun 2015 11:49:37 -0400 From: JXXXX XXXXXXXXXX <[email protected]> To: Britvault Postmaster <[email protected]> Subject: Re: 550 5.6.0 improper use of 8-bit data in message body Hey Craig, I'm sorry for the long delay in replies. We continued researching the issue and did find cases where we inserted special characters into the plain-text portion of emails. While this seems to not cause problems with most servers, it was failing if the 8bitmime setting is enabled in Postfix. We went ahead and corrected that issue with our latest release this week, so emails should deliver as expected going forward. If not, please let me know and we'll investigate further. We'd like to thank you for bringing this to our attention by sending you a MailChimp t-shirt or wool cap (pictured here: http://eepurl.com/bpdc8P). Let me know if you'd prefer a tshirt or one of the caps, and also your mailing address. I'll get it sent out ASAP. Thank you again for your help. JXXXX XXXXXXXXXX Delivery Engineer MailChimp > Britvault Postmaster <mailto:[email protected]> > May 2, 2015 at 3:56 AM > Hiya again, > > Here's details of another incorrectly formed message > (notice the unprintable ?? characters from the MTA's log): > > > Transcript of session follows. > > Out: 220 teak.britvault.co.uk ESMTP Postfix > In: EHLO mail27.wdc03.rsgsv.net > Out: 250-teak.britvault.co.uk > Out: 250-PIPELINING > Out: 250-SIZE 10240000 > Out: 250-ETRN > Out: 250-ENHANCEDSTATUSCODES > Out: 250-8BITMIME > Out: 250 DSN > In: MAIL > FROM:<bounce-mc.us7_22517007.1068565-skinner+destiny=britvault.co...@mail27.wdc03.rsgsv.net> > BODY=8BITMIME > Out: 250 2.1.0 Ok > In: RCPT TO:<[email protected]> > Out: 250 2.1.5 Ok > In: DATA > Out: 354 End data with <CR><LF>.<CR><LF> > Out: 550 5.6.0 improper use of 8-bit data in message body > In: QUIT > Out: 221 2.0.0 Bye > > > For other details, see the local mail logfile > > > Apr 30 22:15:50 teak spamlogd[29350]: inbound 205.201.131.27 > Apr 30 22:15:50 teak postfix/smtpd[1360]: connect from > mail27.wdc03.rsgsv.net[205.201.131.27] > Apr 30 22:15:50 teak postfix/smtpd[1360]: 3ld8dL5HFpz2H: > client=mail27.wdc03.rsgsv.net[205.201.131.27] > Apr 30 22:15:50 teak postfix/cleanup[16820]: 3ld8dL5HFpz2H: > message-id=<da9705e52dc2e0e9bae1246451db7745c0e.20150430202...@mail27.wdc03.rsgsv.net> > Apr 30 22:15:50 teak postfix/cleanup[16820]: 3ld8dL5HFpz2H: reject: > mime-error improper use of 8-bit data in message body: Destiny Falkirk ?? > Meet Sunday at Graeme High School ?? Callendar Rd ?? Falkirk, Stirlingshire > FK1 1 from mail27.wdc03.rsgsv.net[205.201.131.27]; > from=<bounce-mc.us7_22517007.1068565-skinner+destiny=britvault.co...@mail27.wdc03.rsgsv.net> > to=<[email protected]> > Apr 30 22:15:50 teak postfix/cleanup[16820]: 3ld8dL6qgDz2H: > message-id=<[email protected]> > Apr 30 22:15:50 teak postfix/smtpd[1360]: disconnect from > mail27.wdc03.rsgsv.net[205.201.131.27] > Apr 30 22:15:50 teak postfix/qmgr[12859]: 3ld8dL6qgDz2H: > from=<[email protected]>, size=1087, nrcpt=1 (queue active) > > ----- End forwarded message ----- -- You received this mail because you are subscribed to [email protected] To unsubscribe, send a mail to: [email protected]
