On Thu, May 24, 2018 14:40, James B. Byrne wrote: > > Starting this morning (2018-05-2) my Squirrelmail (SM) composed posts > to a Listserv mailing list service are being bounced back with this: > . . . > Does anyone have a clue as to what is happening and how it is > resolved? > The temporary fix is to attach an empty or proforma content file to the message and send. This causes the missing header to be created: Content-Type: text/plain; charset="iso-8859-1" -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrne mailto:ByrneJB@xxxxxxxxxxxxx Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ----- squirrelmail-users mailing list Posting guidelines: http://squirrelmail.org/postingguidelines List address: squirrelmail-users@xxxxxxxxxxxxxxxxxxxxx List archives: http://news.gmane.org/gmane.mail.squirrelmail.user List info (subscribe/unsubscribe/change options): https://lists.sourceforge.net/lists/listinfo/squirrelmail-users