Date: Wednesday, April 12, 2017 15:48:06 -0400 From: Jerry Geis jerry.geis@gmail.com
So I am using sendmail on C7.
I added to the .procmailrc file VERBOSE and a log file.
procmail: Assigning "SUBJECT= Tornado Monday, 03/27/2017 at 20:27:02. The Point BB.OBSURGRH is"
This command: echo "" | mail -s "Tornado Monday, 03/27/2017 at 20:27:02. The Point BB.OBSURGRH is in Alarm at PRI3 with a value of 63.4 %.Informational Text: OB SURGERY HUMIDITY ALARM" email_test
With email_test being a local account... clearly my subject is truncated. Is there a way to expand that?
A "Subject:" line is just a structured text line in the message body and MTAs (e.g., sendmail) don't do anything differently with it than any other line in a message body. The max length is 998 "characters".
I suspect that your MUA or more likely procmail is where the truncation is taking place. I just did:
/bin/mailx -s"... 200+ character subject ..."
on a C6/sendmail machine and it worked fine.