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FastMail Forum All posts relating to FastMail.FM should go here: suggestions, comments, requests for help, complaints, technical issues etc. |
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18 Feb 2017, 09:20 AM | #1 |
Junior Member
Join Date: Feb 2017
Posts: 6
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Hide sender IP address
Is it possible to hide sender IP address so that it doesn't show up in mail header?
I kept meaning to find a solution to this, but was too lazy to deal with it and use VPN instead to mask it. Basically, I don't really want my mail recipients to know my IP address, especially when I travel. I just tested it. If I send email directly using web interface, it doesn't show my IP. But if I send it use Thunderbird, it does. Oddly enough, if I send using Fastmail app on Android phone, it doesn't show IP either. Wonder if it's something that's configurable on my end. |
18 Feb 2017, 10:26 AM | #2 |
The "e" in e-mail
Join Date: May 2003
Location: mostly in Thailand
Posts: 3,090
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If your email client adds headers that include your IP address (most do) then FastMail will not remove those headers. I also dislike the privacy implications, and this is one reason I generally stick to the web interface. IMHO, Thunderbird (while a good email client) has few advantages over FastMail's own interface, except offline access.
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18 Feb 2017, 11:05 AM | #3 |
Intergalactic Postmaster
Join Date: May 2004
Location: Irving, Texas
Posts: 8,926
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Welcome to the EMD Forums!
Email started with a very simple system where you could actually log into a receiving mail server manually and type the message directly into the server. In order to allow troubleshooting and discover the source of early spam, the system evolved to the current system made up of several agents:
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18 Feb 2017, 01:17 PM | #4 | |
Member
Join Date: Apr 2016
Posts: 79
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Quote:
you're wrong. Fastmail does strip the IP. You have to use another port. http://www.emaildiscussions.com/showthread.php?t=70204 |
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18 Feb 2017, 02:23 PM | #5 |
Intergalactic Postmaster
Join Date: May 2004
Location: Irving, Texas
Posts: 8,926
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Thanks for finding that! I just tested this and here is what I found:
If you can set the SMTP port to port 565 in your email client, both the IP address and User-Agent headers are not inserted in the headers. Some clients may not allow that port to be used. I just checked and it works great in Thunderbird. Bill |
18 Feb 2017, 08:31 PM | #6 |
Member
Join Date: Apr 2016
Posts: 79
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iOS Mail and OS X Mail.app also work.
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19 Feb 2017, 01:29 AM | #7 |
Junior Member
Join Date: Feb 2017
Posts: 6
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Sweeeeet! Thank you both!
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23 Feb 2017, 09:56 PM | #8 |
Essential Contributor
Join Date: Jun 2009
Posts: 395
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Hello.
Noticed that when using Port 565, the "IP =" part of the "X-Spam-source:" header is now the localhost ("IP='127.0.0.1'"), rather than the IP address of the submitting MUA. I have my own SMTP servers on two micro VPS instances with proper and clean (not listed in any of the Spam rating services) forward and reverse dns records and seldom use Fastmail for sending mail. I'm tempted to start using FM for outgoing mail as well. The only problem would be that, by carefully managing my own servers, it is unlikely that I would ever be listed as a source of Spam. Because Fastmail is a shared service, I would no longer control my own destiny and could have my mail rejected for Spam when one or more of FM's IP addresses becomes compromised. Of course, all E-Mail hosts experience this problem. Some deal with it better than others. I believe, but don't know from my own experience, that FM does a good job. At least now I can use FM when the VPS host is down (once in a blue moon) and for sending from K-9 Mail with my Android phone. -- Jacinto |
24 Feb 2017, 11:45 AM | #9 |
Essential Contributor
Join Date: Oct 2008
Posts: 212
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Thank you much for the port-565 tip! (And thank you, FM, for this handy little feature).
I just tested in Outlook and it seems to work. Side-question: While adjusting my client settings, I tried TLS, but it didn't connect. So, back to the SSL option, which worked fine. Why not TLS on these connections? I thought TLS was superior to SSL. |
24 Feb 2017, 11:50 AM | #10 | |
Intergalactic Postmaster
Join Date: May 2004
Location: Irving, Texas
Posts: 8,926
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Quote:
https://www.fastmail.com/help/techni...sstarttls.html Bill |
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24 Feb 2017, 12:14 PM | #11 |
Junior Member
Join Date: Feb 2017
Posts: 6
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I wholeheartedly agree. The thing about SSL/TLS version number is a mess..
Sometimes it's better not to know how the sausage is made About Jacinto's point of IP gets blacklisted, there is also a flipside. I'd imagine FM has more resource to deal with ISP's to get IPs unblocked than you do time/patience for. |
24 Feb 2017, 12:38 PM | #12 | |
The "e" in e-mail
Join Date: May 2003
Location: mostly in Thailand
Posts: 3,090
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Quote:
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24 Feb 2017, 01:48 PM | #13 |
Essential Contributor
Join Date: Oct 2008
Posts: 212
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24 Feb 2017, 08:29 PM | #14 | ||
Essential Contributor
Join Date: Jun 2009
Posts: 395
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Quote:
Quote:
From experience, I've learned that you can't run a mail server with the "popular" ($5.00 a month or less with millions of subscribers) VPS hosts such as AWS, Digital Ocean, Vultur, etc. They either can't or won't help when blocks of their IP addresses are blacklisted. I now run my VPS instances with a small host where the owner is active in day to day operations. I've been lucky in that my IP addresses with this host have never been blacklisted. Hopefully, my luck won't run out for a while longer. -- Jacinto |
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13 Oct 2023, 10:08 PM | #15 | |
Master of the @
Join Date: May 2003
Posts: 1,320
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