On March 24, 2020 4:03:29 AM PDT, Geoff Gaunt <gnga...@gmail.com> wrote: >Running K9 Version 5.600 on Android 8.1 > >I've noticed for several months that when using "Reply All" to multiple >cc. >recipients the reply gets rejected/bounced from the receiving servers >This only happens with K9 - using "Reply All" on my laptop (MS-Outlook) > >works fine > >One of the bounce replies contained the reason described below... > >So it looks like the reply all doesn't send a "from" header causing, >them to be rejected as potential spam > >>>>>>>>>>>>>>>>>>>>>>>>>> > >This is the mail system at host ofarelay01.hostedemail.com. > >I'm sorry to have to inform you that your message could not be >delivered to one or more recipients. It's attached below. > >For further assistance, please send mail to postmaster. > >If you do so, please include this problem report. You can delete your >own text from the attached returned message. > >The mail system <nmsilverberg @ googlemail . com>: host gmail-smtp in . >l . google . com[74.125.192.27] said: > >550-5.7.1 [216.40.42.17 11] Our system has detected that this message >is > >550-5.7.1 not RFC 5322 compliant: > >550-5.7.1 'From' header is missing. > >550-5.7.1 To reduce the amount of spam sent to Gmail, this message has >been > >550-5.7.1 blocked.
K-9 will definitely send a From: header on all outgoing messages, including reply-all messages. Perhaps you haven't set the account composition defaults. Go to Account Settings -> Sending Mail -> Composition Defaults and make sure everything is filled in correctly. --Sean -- You received this message because you are subscribed to the Google Groups "K-9 Mail" group. To unsubscribe from this group and stop receiving emails from it, send an email to k-9-mail+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/k-9-mail/3DB58E4A-F989-4669-9FE0-1AA7C8B6B4D6%40seangreenslade.com.
