[SM-USERS] ListServ MLM refuses Squirrelmail plain text messages

2018-05-24 Thread James B. Byrne via squirrelmail-users
Starting this morning (2018-05-2) my Squirrelmail (SM) composed posts to a Listserv mailing list service are being bounced back with this: Reporting-MTA: dns;smtp.utc.edu Received-From-MTA: dns;NAM03-BY2-obe.outbound.protection.outlook.com Arrival-Date: Thu, 24 May 2018 09:16:56 -0400 Original-R

Re: [SM-USERS] ListServ MLM refuses Squirrelmail plain text messages

2018-05-24 Thread James B. Byrne via squirrelmail-users
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 fi