Email Sending Error.

[bssocial]

I am having issues sending emails from my web mail, and using PHP mail()
I looked in Email Trace on my account and found a bunch of these two errors...

SMTP error from remote mail server after RCPT TO:<myemail@domain.com>: host 198.91.80.251 [198.91.80.251]: 451 4.3.0 Error: queue file write error

and

Connection timed out: SMTP timeout while connected to 198.91.80.251 [198.91.80.251] after initial connection

In about 40 attempts to send messages, only 3 have gotten sent...
Please help!

Images for reference...

 

[hbazer]

About 16:30 2013-03-14 UTC

I ran a Email test PHP script on the three (3) free-hosting servers and a Premium server [ s1 ]

The free-hosting servers would send mail to their self - where it was read - but not to any other Email server

The Premium server would send mail to its self - and to Email accounts on the three (3) free-hosting servers - and to a gmail.com Email account - where they were read

SMTP server for the three (3) free-hosting servers has a 'issue' with sending Emails to 'other' servers