I have a client that uses Domino Server with StartTLS. We are on Exchange 2000 with TLS enabled. We are able to send them email fine but they cannot send or reply to our emails. According to the admin he states that Lotus support TLS on secure port 25 and not 465(smtps). Here is the error he is getting. 06/29/2005 10:35:46 AM [0234:001D-0DC8] SMTPClient: SSL handshake error: 1C5Bh 06/29/2005 10:35:46 AM Router: No messages transferred to 1234.COM (host mail.1234.COM) via SMTP: Unexpected TCP error. 06/29/2005 10:35:47 AM Unexpected TCP/IP error func: 001Dh error Notes: 1C5B, NTI: 1000h, Stack: 00000000h Now the question is, do I set SMTPS changes on the Firewall? I dunno if my firewall will like the incoming request coming to port 25 and then get redirected to 465? unless there is another way? Or Do I change from default 465 to secure 25 (SMTPS)? I am sure i can't be the only one with is problem, any help with this is greatly appreciated.
SMTP negotiates SSL over the same session using the STARTTLS command. It appears from the errors, the servers got as far as negotiating SSL. You may need to relax the SSL settings on your Notes server depending on the authenticity of the certificate installed on the Exchange server. It is up to the client (in this case Notes) to determine if the certificate meets it's requirement. Exchange is not very strict by default in its certificate checking so this can explain the 1-way communication. An IBM/Lotus engineer might be able to give you more details on what SSL handshake error: 1C5Bh means. -- Please do not send email directly to this alias. This alias is for newsgroup purposes only. This posting is provided "AS IS" with no warranties, and confers no rights. "Jitesh Mehta" wrote in message news:550896FA-9D46-4668-8EB5-3189614CA0E7@microsoft.com... >I have a client that uses Domino Server with StartTLS. We are on Exchange > 2000 with TLS enabled. We are able to send them email fine but they cannot > send or reply to our emails. According to the admin he states that Lotus > support TLS on secure port 25 and not 465(smtps). Here is the error he is > getting. > > 06/29/2005 10:35:46 AM [0234:001D-0DC8] SMTPClient: SSL handshake error: > 1C5Bh > 06/29/2005 10:35:46 AM Router: No messages transferred to 1234.COM (host > mail.1234.COM) via SMTP: Unexpected TCP error. > 06/29/2005 10:35:47 AM Unexpected TCP/IP error func: 001Dh error Notes: > 1C5B, NTI: 1000h, Stack: 00000000h > > Now the question is, do I set SMTPS changes on the Firewall? I dunno if my > firewall will like the incoming request coming to port 25 and then get > redirected to 465? unless there is another way? > > Or Do I change from default 465 to secure 25 (SMTPS)? > > I am sure i can't be the only one with is problem, any help with this is > greatly appreciated.
