[quote user="David Tarbox-Cooper"]

 I had to change my password for the BT email service due to hacking.  Since I changed it, I have started to get the message above.  When I compose a new email message, then click on SEND (the icon), I get an error message headed;-

SMTP  Network or Protocol Error sending mail.[/quote]

David, you will now have to change it again as you just posted it on a public forum!

I suspect the error message is due to a BT error - see if it goes away after a few hours.

New installation of Pegasus 4.62.  Receives incoming mail OK but will not send: error message is

Also in the 'copy to self' is -

 "Delivery has failed on the enclosed message for the following
reasons reported either by the mail delivery system on the mail
relay host or by the local TCP/IP transport module:

   334 530 Access denied"

 Any suggestions how to fix this?

We don't this graphic, turn on session logging in Tools | Internet options | General and then paste the text from the session log into your reply.

[quote user="Thomas R. Stephenson"]turn on session logging in Tools | Internet options | General and then paste the text from the session log into your reply. [/quote]

Don't forget to read the associated help before doing so:

Create Internet session logs (advanced diagnostic use only) Checking this control tells Pegasus Mail to create special log files that show the entire exchange of information between it and the servers it connects to. Each session will be created in a file called TCPxxxx.WPM in your home mailbox directory (the "xxxx" is replaced by four digits). Creating session logs will slow down the performance of your system somewhat, and you should be aware that any username and password information exchanged between Pegasus Mail and the server will be shown in the log, *even* if you use SSL to secure the connection. Session logs are primarily useful if you need to debug a problem between Pegasus Mail and one of the servers it connects to - you should enable the option only on instructions from a system administrator or from Pegasus Mail technical support. [ Technical note: this control has thesame effect as using a "-Z 32" commandline switch when you run Pegasus Mail ]

Ignore my erlier message - have tracked the problem down (remnants of an old e-mail account not fully deleted).  Things seem to be OK now.

> Connect to 'smtp.mail.yahoo.com' port 465, timeout 15.
> 23:09:39.937 Connection established to 98.136.185.95
> 23:09:39.328 SSL/TLS session established: 3DES, CBC mode, keysize 192 bits
> 23:09:39.328 Certificate user is cn=smtp.mail.yahoo.com, ou=Yahoo, o=Yahoo! Inc., l=Sunnyvale, sp=CA, c=US
> 23:09:39.328 Certificate is valid from Mon Oct 03 01:00:00 2011 to Mon Oct 07 13:00:00 2013
> 23:09:39.328 Certificate fingerprint is D257E710B1CDCCF7F1343835E8FAD565
> 23:09:39.328 >> 0038 220 smtp202.mail.gq1.yahoo.com ESMTP\0D\0A
> 23:09:39.343 << 0022 EHLO [192.168.0.193]\0D\0A
> 23:09:39.531 >> 0032 250-smtp202.mail.gq1.yahoo.com\0D\0A
> 23:09:39.531 >> 0032 250-AUTH LOGIN PLAIN XYMCOOKIE\0D\0A
> 23:09:39.531 >> 0016 250-PIPELINING\0D\0A
> 23:09:39.531 >> 0014 250 8BITMIME\0D\0A
> 23:09:39.546 << 0012 AUTH LOGIN\0D\0A
> 23:09:40.734 >> 0018 334 VXNlcm5hbWU6\0D\0A
> 23:09:40.734 << 0030 bWhsdWNhc0BudGx3b3JsZC5jb20=\0D\0A

Username is mhlucas@ntlworld.com, the password is just as easy to decode You have effectively sent you username and password to the entire community.  You need to change this.

> 23:09:40.921 >> 0018 334 UGFzc3dvcmQ6\0D\0A
> 23:09:40.921 << 0014 <munged> \0D\0A
> 23:09:40.093 >> 0019 530 Access denied\0D\0A

They do not like the username and password you sent for authentication.  Verify that these are valid for Yahoo server.

> 23:09:45.875 << 0006 QUIT\0D\0A
> 23:09:45.875 19: SSL write error -24 (locus 0, type 0, 'Received TLS alert message: Close notify\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC\FFFFFFCC')

Looks like it broke the connection without waiting for your QUIT command.

Thomas

That is a dead username/password and is what was causing the problem since it somehow found its way into the settings and conflicted with a new ISP/email address setup.

 Further to earlier discussion on this subject, I have also  experienced the following similar problem

Delivery has failed on the enclosed message for the following
reasons reported either by the mail delivery system on the mail
relay host or by the local TCP/IP transport module:

   334 530 Access denied

I had to change my password for the BT email service due to hacking.  Since I changed it, I have started to get the message above.  When I compose a new email message, then click on SEND (the icon), I get an error message headed;-

SMTP  Network or Protocol Error sending mail.

and the diagnostic;-

[*] Connection established to 217.146.188.192
>> 0038 220 smtp826.mail.ird.yahoo.com ESMTP
<< 0014 EHLO 0.0.0.0
>> 0032 250-smtp826.mail.ird.yahoo.com
>> 0032 250-AUTH LOGIN PLAIN XYMCOOKIE
>> 0016 250-PIPELINING
>> 0019 250-SIZE 41697280
>> 0014 250 8BITMIME
<< 0012 AUTH LOGIN
>> 0018 334 VXNlcm5hbWU6
<< 0034 ZGF2aWR0YzJAYnRpbnRlcm5ldC5jb20=
>> 0018 334 UGFzc3dvcmQ6
<< 0030 MmJvcm5vdDJidGhhdGlzdGhlPw==
>> 0019 530 Access denied

I clear the error message, and then the email is sent successfully, and I receive a failed message report from my ISP 9BT).  The message does get sent correctly and is received.  It's just that message is annoying!

  Can anybody suggest a remedy?  I*f my SMTP password were wrong, I would not be able to send the message successfully.

                    Perplexed David T-C!