Comments (3)
emersion
commented on July 28, 2024
i/o timeout would typically happen if the final DATA dot is not received. Are you sure that the final dot is sent with a CRLF instead of lone LFs? That is, the final DATA dot must be \r\n.\r\n and not \n.\n.
This change is by-design to protect against SMTP smuggling attacks.
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iredmail
commented on July 28, 2024
i/o timeout would typically happen if the final DATA dot is not received. Are you sure that the final dot is sent with a CRLF instead of lone LFs? That is, the final DATA dot must be
\r\n.\r\nand not\n.\n.This change is by-design to protect against SMTP smuggling attacks.
The email was sent by Postfix, and all other emails sent by same Postfix server work fine, so i assume it sends correct smtp commands.
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iredmail
commented on July 28, 2024
Interesting, this issue was fixed by #250 (Tested on production server with latest git version of go-smtp).
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Related Issues (20)
- client: batching commands HOT 1
- Feature Request: give ability to drop connection before greeting HOT 3
- Invalid server example provided in README HOT 1
- v1.16.0 breaks backwards compatibility HOT 3
- Why need to make sure all the data has been consumed ? HOT 1
- Using SMTP server email are not going to external accounts HOT 1
- Valid Reverse-path getting rejected with 500 5.5.4 Unknown MAIL FROM argument HOT 1
- Auth should be mandatory for `MAIL`, `RCPT` & `DATA` commands when `server.AuthDisabled` is `false` HOT 2
- google smtp fails to send message with error `Relay access denied` HOT 1
- What's the best way to check and enforce TLS connection? HOT 11
- Server: unauthenticated access HOT 1
- Handle zero-byte TCP healthcheck connections HOT 4
- Unable to set headers when using SendMail with go templating. HOT 2
- Does the server support multi-threading when receiving emails? HOT 1
- Request an example code for smtp relay HOT 2
- [Security] Implement strict CRLF mode HOT 1
- client: allow sending a second EHLO after STARTTLS HOT 7
- Extension support status
- Support AUTH LOGIN HOT 1
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