2 questions: First, do Shaw's SMTP (outgoing email) servers have dynamic IPs? Second, if they are dynamic, what are the options for whitelisting for VPN's, etc?
Your question is a bit vague, regarding the use of VPNs. Can you please describe what you are trying to do so I can investigate a solution to meet your needs?
Tony | Community Mod.
Tony, I need to whitelist the IP of Shaw's SMTP server so I can send email over an external VPN. How do I do that if the IP is dynamic? BTW, I have already configured my email account for remote access. I can receive, but not send.
-Where are you trying to white list the IP on your server?
-The dynamic IP stays the same for quite awhile and does not need to be changed unless the IP changes.
Shaun, my VPN admin asked me for the IP of Shaw's SMTP server (mail.shaw.ca) so they can whitelist it on the company's VPN server. The first time I pinged mail.shaw.ca (27 June) it returned 126.96.36.199. After they whitelisted that IP, I tried sending an email (03 July) and it failed. I immediately pinged mail.shaw.ca again and it returned 188.8.131.52. We concluded Shaw's IP was dynamic, which is why I submitted my original question on this forum. I just now pinged Shaw's server again and got the latter IP again. So, it appears I just happen to catch a "rare" IP change the first time. Roughly how often might the IP for Shaw's SMTP server change? Weekly, monthly?
Hey there stumphopper,
Ah that's the issue. I don't have a super in depth understanding of how our mail servers work, but the IP address is definitely subject to change. It's not always going to be the same. Is your VPN admin able to set up just "mail.shaw.ca" on a whitelist instead of the IP address?
184.108.40.206 Is not a Shaw Communications IP address, it looks like your DNS server may be poisoned somehow.
mail.shaw.ca has 2 IP addresses:
These have not changed in a very long time.
If you're looking to be able to send from a shaw.ca email address via your VPN, you will not be able to, unless your whitelisting means that you won't be sending through the VPN, but directly from your Shaw connection.
Thanks cdearborn, that really helps. FYI, I am dealing with an external VPN server (on on my network). After they whitelisted 220.127.116.11, I was able to send emails from my shaw.ca address. Now I just need to have them whitelist the second IP and de-list that weird 88 thing. I got that one the first time I pinged mail.shaw.ca and I haven't seen it again. Since then, I have only seen the two you quoted. Hopefully, they will be stable for a long time to come.
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