icloud: Error: send HELO/EHLO first and 5.5.1 Error: need MAIL command

[amaury1093]

Email to check

@icloud.com

From where did you run check-if-email-exists?

OVH

Version of check-if-email-exists (if running it yourself)

d4b5ef9

What happened?

When I verify any emails on icloud.com, I get the two errors

• 503 5.5.1 Error: send HELO/EHLO first
• 5.5.1 Error: need MAIL command

Even though I already explicity sent EHLO. This is also reproduced using telnet.

See logs:

2023-12-13T16:44:20.593855Z DEBUG reacher: [email=***@icloud.com] Check SMTP [attempt=1] on [host=mx01.mail.icloud.com.:25]    
2023-12-13T16:44:20.876781Z DEBUG async_smtp::smtp::client::inner: << 220 iCloud iscream SMTP proxy - p00-iscream-smtp-d759469dd-ss5bd 3.5.0 (2403B23-529c1e05a5df)<CRLF>    
2023-12-13T16:44:20.876980Z DEBUG async_smtp::smtp::smtp_client: connection established to mx01.mail.icloud.com:25    
2023-12-13T16:44:20.877411Z DEBUG async_smtp::smtp::client::inner: >> EHLO my.server.tld<CRLF>    
2023-12-13T16:44:21.016842Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>    
2023-12-13T16:44:21.016971Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>    
2023-12-13T16:44:21.017061Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>    
2023-12-13T16:44:21.017149Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>    
2023-12-13T16:44:21.017242Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>250-STARTTLS<CRLF>    
2023-12-13T16:44:21.017351Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>250-STARTTLS<CRLF>250-AUTH LOGIN PLAIN ATOKEN<CRLF>    
2023-12-13T16:44:21.017459Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>250-STARTTLS<CRLF>250-AUTH LOGIN PLAIN ATOKEN<CRLF>250-ENHANCEDSTATUSCODES<CRLF>    
2023-12-13T16:44:21.017564Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>250-STARTTLS<CRLF>250-AUTH LOGIN PLAIN ATOKEN<CRLF>250-ENHANCEDSTATUSCODES<CRLF>250-8BITMIME<CRLF>    
2023-12-13T16:44:21.017698Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>250-STARTTLS<CRLF>250-AUTH LOGIN PLAIN ATOKEN<CRLF>250-ENHANCEDSTATUSCODES<CRLF>250-8BITMIME<CRLF>250-DSN<CRLF>    
2023-12-13T16:44:21.017810Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>250-STARTTLS<CRLF>250-AUTH LOGIN PLAIN ATOKEN<CRLF>250-ENHANCEDSTATUSCODES<CRLF>250-8BITMIME<CRLF>250-DSN<CRLF>250 CHUNKING<CRLF>    
2023-12-13T16:44:21.018039Z DEBUG async_smtp::smtp::smtp_client: server p00-iscream-smtp-d759469dd-ss5bd with {EightBitMime, StartTls, Pipelining, Authentication(Plain), Authentication(Login)}    
2023-12-13T16:44:21.018516Z DEBUG async_smtp::smtp::client::inner: >> STARTTLS<CRLF>    
2023-12-13T16:44:21.157916Z DEBUG async_smtp::smtp::client::inner: << 220 2.0.0 Ready to start TLS<CRLF>    
2023-12-13T16:44:21.465033Z DEBUG async_smtp::smtp::smtp_client: connection encrypted    
2023-12-13T16:44:21.465311Z DEBUG async_smtp::smtp::client::inner: >> EHLO my.server.tld<CRLF>    
2023-12-13T16:44:21.743669Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>    
2023-12-13T16:44:21.743772Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>    
2023-12-13T16:44:21.743839Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>    
2023-12-13T16:44:21.744007Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>    
2023-12-13T16:44:21.744145Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>250-AUTH LOGIN PLAIN ATOKEN<CRLF>    
2023-12-13T16:44:21.744227Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>250-AUTH LOGIN PLAIN ATOKEN<CRLF>250-ENHANCEDSTATUSCODES<CRLF>    
2023-12-13T16:44:21.744323Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>250-AUTH LOGIN PLAIN ATOKEN<CRLF>250-ENHANCEDSTATUSCODES<CRLF>250-8BITMIME<CRLF>    
2023-12-13T16:44:21.744429Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>250-AUTH LOGIN PLAIN ATOKEN<CRLF>250-ENHANCEDSTATUSCODES<CRLF>250-8BITMIME<CRLF>250-DSN<CRLF>    
2023-12-13T16:44:21.744553Z DEBUG async_smtp::smtp::client::inner: << 250-p00-iscream-smtp-d759469dd-ss5bd<CRLF>250-PIPELINING<CRLF>250-SIZE 28311552<CRLF>250-ETRN<CRLF>250-AUTH LOGIN PLAIN ATOKEN<CRLF>250-ENHANCEDSTATUSCODES<CRLF>250-8BITMIME<CRLF>250-DSN<CRLF>250 CHUNKING<CRLF>    
2023-12-13T16:44:21.744761Z DEBUG async_smtp::smtp::smtp_client: server p00-iscream-smtp-d759469dd-ss5bd with {Authentication(Plain), Pipelining, Authentication(Login), EightBitMime}    
2023-12-13T16:44:21.745591Z DEBUG async_smtp::smtp::client::inner: >> MAIL FROM:<dev@reacher.email><CRLF>    
2023-12-13T16:44:21.885118Z DEBUG async_smtp::smtp::client::inner: << 250 2.1.0 Ok<CRLF>    
2023-12-13T16:44:21.885885Z DEBUG async_smtp::smtp::client::inner: >> RCPT TO:<SHja0dyH8ft8E2I@icloud.com><CRLF>    
2023-12-13T16:44:22.857693Z DEBUG async_smtp::smtp::client::inner: << 503 5.5.1 Error: send HELO/EHLO first<CRLF>    
2023-12-13T16:44:22.858612Z DEBUG async_smtp::smtp::client::inner: >> RCPT TO:<***@icloud.com><CRLF>    
2023-12-13T16:44:22.998145Z DEBUG async_smtp::smtp::client::inner: << 503 5.5.1 Error: need MAIL command<CRLF>    

Relevant log output

No response