cancel
Showing results for 
Search instead for 
Did you mean: 
428 Views
Message 1 of 22

SMTP Problem

Hi,

 

I had BT infinity installed yesterday.  For normal web access it is working, for incoming email it is fine.  But outgoing email (to my own server) appears to have its attempt to open SMTP on port 25 diverted to 465.

 

It was working fine yesterday (when I was with demon) every attempt since to send email has resulted in this message from thunderbird:  Cannot establish SSL with SMPT server x.x.x.x:465 SSL_Conection_Error 1:error 140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol

 

Thunderbird is setup to use port 25, the server is expecting 25 to be used  The x.x.x.x is the correct address of the server.

 

Richard

0 Ratings
Reply
21 REPLIES 21
Distinguished Guru
421 Views
Message 2 of 22

Re: SMTP Problem

It's trying to use SSL.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
If you found this post helpful, please click on the star on the left
If not, I'll try again 🙂
0 Ratings
Reply
418 Views
Message 3 of 22

Re: SMTP Problem

But its not configured to, it wasn't yesterday and I haven't changed anything (other than Internet access to BT Infinity)

0 Ratings
Reply
Guru
415 Views
Message 4 of 22

Re: SMTP Problem

It's very common for ISPs to block outgoing port 25; even BE used to.

Will your server accept incoming SSL connections on port 587?

That seems the commonest setup where 25 won't work.  

 

587 works for me from Thunderbird->goolge and a few others over Infinity; with Connection security set up as STARTTLS

I've also got a couple of connections on 465, configured in Thunderbird with connection security SSL/TLS

 

It sounds as if Infinity is switching the port, but not informing Thunderbird to switch connection security type.

 

0 Ratings
Reply
Distinguished Guru
414 Views
Message 5 of 22

Re: SMTP Problem

So you haven't configured the outgoing SMTP server on Thunderbird to use SSL?
http://www.names.co.uk/support/email/upgrading_to_ssl_for_smtp/1511-how_to_enable_ssl_for_smtp_in_mo...
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
If you found this post helpful, please click on the star on the left
If not, I'll try again 🙂
0 Ratings
Reply
408 Views
Message 6 of 22

Re: SMTP Problem

I haven't configured anythng to use SSL, there is no need.  

 

The server only accepts SMPT from an address that has already accessed it using POP/IMAP within the last 15 minutes.  

 

I know what I am doing I want totatly unrestricted access from my internet connection.

0 Ratings
Reply
Distinguished Guru
405 Views
Message 7 of 22

Re: SMTP Problem

Try another mail client.

 

Better still, use telnet to access your mail server.

 

Works for me

 

C:\>telnet smtp.gmail.com 25

220 mx.google.com ESMTP e50sm17672300eev.13 - gsmtp
helo
250 mx.google.com at your service
quit
221 2.0.0 closing connection e50sm17672300eev.13 - gsmtp


Connection to host lost.

C:\>

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
If you found this post helpful, please click on the star on the left
If not, I'll try again 🙂
0 Ratings
Reply
394 Views
Message 8 of 22

Re: SMTP Problem

Tried a direct telnet on port 25, it is definitely being mapped to port 465 by BT (and thus does not work)
0 Ratings
Reply
Distinguished Guru
392 Views
Message 9 of 22

Re: SMTP Problem

How come it works ok for me? What a mystery.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
If you found this post helpful, please click on the star on the left
If not, I'll try again 🙂
0 Ratings
Reply
Distinguished Guru
365 Views
Message 10 of 22

Re: SMTP Problem


@Richard_Proctor wrote:

I haven't configured anythng to use SSL, there is no need.  

 

The server only accepts SMPT from an address that has already accessed it using POP/IMAP within the last 15 minutes.  

 

I know what I am doing I want totatly unrestricted access from my internet connection.


Hi. Welcome to the forums.

 

As a matter of interest, what security product have you got ? Did you by any chance install anything when Inifinity was provided, e.g. BT desktop help ?

 

 

0 Ratings
Reply