Re: I/O error - no retry

Hi,

These are all the log lines for one of the affected messages:

2026-02-02 10:48:41.283 [822946] 1XXXXX-XXXXXXXXXX-3rpC Completed 
QT=3.361s
2026-02-02 10:48:41.283 [822946] 1XXXXX-XXXXXXXXXX-3rpC
2026-02-02 10:48:41.280 [822948] 1XXXXX-XXXXXXXXXX-3rpC peer close after 
all rcpt responses; converting i/o-error to no-error
2026-02-02 10:48:41.280 [822948] 1XXXXX-XXXXXXXXXX-3rpC SSL_write: (from 
forwarder.mydomain [1.2.3.4]:30548) syscall: Connection reset by peer
2026-02-02 10:48:38.384 [822936] 1XXXXX-XXXXXXXXXX-3rpC <= user@mydomain 
H=forwarder.mydomain [1.2.3.4]:30548 I=[4.3.2.1]:25 Ci=822936 P=esmtps 
L. X=TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256 CV=no S=20367368 RT=0.303s 
id=XXXXXX@mydomain T="Some subject" from <user@mydomain> for 
recipient@otherdomain

I also have tried to further debug the problem. Here is a snippet from 
the debug log:

     SMTP|> MAIL FROM: ***
     SMTP|> RCPT TO:***
     SMTP>> DATA
   cmd buf flush 474 bytes
  tls_write(0x55649bdd92e0, 474)
  SSL_write(0x55649bd05d80, 0x55649bdd92e0, 474)
  outbytes=474 error=0
  sync_responses expect mail
  Calling SSL_read(0x55649bd05d80, 0x55649bdd82e0, 4096)
   read response data: size=287
     SMTP<< 250 2.1.0 Sender ok
  sync_responses expect rcpt for ***
     SMTP<< 250 2.1.5 Recipient ok
  sync_responses expect data
     SMTP<< 354 Enter mail, end with "." on a line by itself
    SMTP>> (writing message)
  [ ... SNIP ... ]
  flushing headers buffer
  writing data block fd=6 size=8189 timeout=300
  tls_write(0x55649bd1ecc8, 8189)
  SSL_write(0x55649bd05d80, 0x55649bd1ecc8, 8189)
  outbytes=-1 error=1
  LOG: MAIN
    TLS error (SSL_write): error:100C0102:BIO routines::passed a null 
parameter
  writing error 104: Connection reset by peer
  LOG: MAIN
    peer close after all rcpt responses; converting i/o-error to no-error
  ok=1 send_quit=0 send_rset=1 continue_more=0 yield=0 first_address is 
NULL
  Calling SSL_read(0x55649bd05d80, 0x55649bdd82e0, 4096)
   read response data: size=33
     SMTP<< 421 4.4.2 Connection read error
  Calling SSL_read(0x55649bd05d80, 0x55649bdd82e0, 4096)
  tls_close(): shutting down TLS (with response-wait)
  tls_write((nil), 0)
  SSL_shutdown: error:0A000126:SSL routines::unexpected eof while reading
     SMTP(close)>>

Thank you + best regards,

Stefan

On 2026-02-08 11:45, Jeremy Harris via Exim-users wrote:

> On 2026/02/08 10:23 AM, Stefan Langeder via Exim-users wrote:
> 
>> Hi,
>> 
>>> Presumably Exim thinks the message was dealt with.  What does the log 
>>> say?
>> 
>> that brings me back to my initial question that I started this thread 
>> with. The logs do not say much, they say
>> 
>> "peer close after all rcpt responses; converting i/o-error to 
>> no-error"
>> 
>> and then
>> 
>> "completed".
> 
> Please give all log lines relevant to the message.  Do not summarise; 
> incomplete
> information makes it hard to draw accurate conclusions.
> 
> For example, there must have been an acceptance line ("<=") for the 
> message.
> 
>> My initial question was if "converting i/o-error to no-error" may be 
>> the reason that Exim does not retry - or in other words, makes it 
>> think that the message was dealt with. If so, I am looking for a way 
>> to tell Exim that the transmission is not successful in such cases and 
>> that a retry is required.
> 
> On 04/02/2026 11:03, Jeremy Harris via Exim-users wrote: On 2026/02/04 
> 9:14 AM, Stefan Langeder via Exim-users wrote:  > No.
       ^^^^^

-- 
Cheers,
   Jeremy

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