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[GH-ISSUE #147] Remotes Auth Account Replace My From Account #36

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opened 2026-02-26 18:33:01 +03:00 by kerem · 3 comments

kerem commented

2026-02-26 18:33:01 +03:00

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Originally created by @nonbutAworker on GitHub (Jan 25, 2024).
Original GitHub issue: https://github.com/decke/smtprelay/issues/147

Hi, thank for you repo !

If I send email From A@test.com To B@test.com, but I configure C@test.com as auth account in smtprelay.ini file like this:

; GMail
remotes = starttls://C@test.com:xxx@smtp.gmail.com:587

Then I login in B@test.com account and find out the sender is C@test.com instead of REAL sender A@test.com as expected
How Can I fix this as expected, any help would be appreciated !

Originally created by @nonbutAworker on GitHub (Jan 25, 2024). Original GitHub issue: https://github.com/decke/smtprelay/issues/147 Hi, thank for you repo ! If I send email From **`A@test.com`** To **`B@test.com`**, but I configure `C@test.com` as auth account in `smtprelay.ini` file like this: ``` ini ; GMail remotes = starttls://C@test.com:xxx@smtp.gmail.com:587 ``` Then I login in `B@test.com` account and find out the sender is `C@test.com` instead of REAL sender `A@test.com` as expected How Can I fix this as expected, any help would be appreciated !

kerem closed this issue

2026-02-26 18:33:01 +03:00

kerem commented

2026-02-26 18:33:02 +03:00

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@decke commented on GitHub (Jan 25, 2024):

This is expected behavior and what most mail services do. If you look at the headers of the email you will see that the mail was send from A@test.com but since you authenticated with C@test.com GMail automatically rewrites the mail headers accordingly. It is the price we have to pay for fighting spam.

@decke commented on GitHub (Jan 25, 2024): This is expected behavior and what most mail services do. If you look at the headers of the email you will see that the mail was send from A@test.com but since you authenticated with C@test.com GMail automatically rewrites the mail headers accordingly. It is the price we have to pay for fighting spam.

kerem commented

2026-02-26 18:33:02 +03:00

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@nonbutAworker commented on GitHub (Jan 25, 2024):

Thanks very much !
what you mean is who changed the from address is GMail instead of this repo? which means If I found another smtp server as my next deliver that didn't change the from address, I can get what I want?

@nonbutAworker commented on GitHub (Jan 25, 2024): Thanks very much ! what you mean is who changed the `from address` is GMail instead of this repo? which means If I found another smtp server as my next deliver that didn't change the `from address`, I can get what I want?

kerem commented

2026-02-26 18:33:02 +03:00

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@decke commented on GitHub (Jan 25, 2024):

I do not use GMail myself anymore so I cannot easily test it but I used it in the past and the behavior was easy to understand when looking at the full mail headers.
Google SMTP servers preserve some headers so you will still see A@test.com somewhere but it also rewrites some parts of it to match with the email address you use for authentication.

If you can post a full mail including headers that would help a lot to explain it.

@decke commented on GitHub (Jan 25, 2024): I do not use GMail myself anymore so I cannot easily test it but I used it in the past and the behavior was easy to understand when looking at the full mail headers. Google SMTP servers preserve some headers so you will still see A@test.com somewhere but it also rewrites some parts of it to match with the email address you use for authentication. If you can post a full mail including headers that would help a lot to explain it.

kerem referenced this issue

2026-02-26 18:33:15 +03:00

[PR #36] [MERGED] Bump wangyoucao577/go-release-action from 1.17 to 1.18 #74

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