Comments (3)
Hello xhit, thank you. It is behavior a user found and I haven't tested myself. Will be setting up an Exchange server for testing to confirm it is reproducible.
Also failed to note that part of the code, smtp.go, so a bit of an oversight on my end.
If the behavior is reproducible, I'll provide my findings.
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Currently a EHLO
is sent after a STARTTLS
, but maybe your Exchange Server supports HELO
instead EHLO
, but I doubt this. I made a tiny change in branch helo-after-starttls
, you can test it, but only works if really your Exchange Server doesn't supports EHLO
.
Can you please response with the complete Mail error message from this package?
Also, are you using LOGIN
Auth? If yes, try another like PLAIN
if server supports, if Exchange is behind a Firewall is possible AUTH
command was stripped and this scenario can trigger this error too.
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Closed because package works as RFC3207 says, nothing to do here.
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Related Issues (20)
- TLS handshake failure when used with go 1.22.0 HOT 3
- Identifying inline attachments with CID instead of name HOT 1
- Custom encodig for email headers HOT 4
- Add an option for mandatory TLS on SMTPServer
- Race on timeout HOT 3
- No mail send HOT 4
- Mail Error: SMTP Connection timed out HOT 2
- error info inappropriate when auth password need update HOT 2
- Why is it not possible to use proxy? HOT 4
- Export priority type HOT 3
- Using a reader to attach a file HOT 1
- Delivery receipt not working HOT 1
- Use Content-Type: text/x-amp-html HOT 1
- New release HOT 1
- How to track the low level raw SMTP log? HOT 2
- deleted
- [Feature Req] Interface that accept To/CC with a single string HOT 2
- Toggle to accept incomplete email address HOT 3
- Support attachments with empty data HOT 3
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