Re: Intermittent failure

> Hi
>
> Suddenly for last 2 weeks, I have started facing this problem. There is 
> intermittent failure of mail. As can be seen, while first session fails, 
> second goes through. For last six months it was running with virtually no 
> error.

<snipped>

<<<getline<<< 421 Unexpected failure, please try later
*** Error ***  Message not accepted by server
>>>putline>>> QUIT
<<<getline<<< 221 SMTP_SERVER.yourhostingaccount.com closing connection
Try number 2 of 3.
<<<getline<<< 220 ESMTP Mon, 04 May 2015 12:37:22 -0400: UCE strictly 
prohibited
>>>putline>>> EHLO ATTENDANCESRV
<<<getline<<< 250-bosauthsmtp07.yourhostingaccount.com Hello ATTENDANCESRV 
[IP Address]
<<<getline<<< 250-SIZE 34603008
<<<getline<<< 250-8BITMIME
<<<getline<<< 250-PIPELINING
<<<getline<<< 250-AUTH PLAIN LOGIN
<<<getline<<< 250-STARTTLS
<<<getline<<< 250 HELP
>>>putline>>> MAIL FROM:<[email protected]>
<<<getline<<< 550 bosauthsmtp07: Host IP Address: No unauthenticated 
relaying permitted
*** Error ***  The SMTP server does not like the sender name.
Have you set your mail address correctly?
>>>putline>>> QUIT

<snipped>

> Kindly advise.
>
> Regards,
>
> Skand


I see two issues here.

The first is the server itself encountered an internal error that caused it 
to issue error message "421 Unexpected failure, please try later".  I cannot 
help with that.

The second issue I see is that Blat did not authenticate itself to the 
server after closing the first connection.  I just added a few lines of code 
to clear Blat's internal flag so it will attempt to authenticate again when 
the server connection is reestablished.

Chip