Getting signal 11 httpd segmentation fault when attempting to send mail

I am using the PHO freebsd instructions. I followed them to the letter. 
My client is thunderbird and I only support imap with TLS or SSL. When I 
attempt to send an email, thunderbird tells me that

    Sending of message failed.
    The message could not be sent because the connection to SMTP server
    cagedlion.net was lost in the middle of the transaction. Try again
    or contact your network administrator.

There is no maillog data, syslog gives me:

      pid 19448 (httpd), uid 65534: exited on signal 11

The apache error log entry is:

    Wed May 06 16:46:28.393338 2015] [core:notice] [pid 19464] AH00052:
    child pid 19482 exit signal Segmentation fault (11)

I spent the afternoon reading google with nothing at all suggesting what 
to do.

When I restarted, there was a warning from the Apache error log that may 
or may not be relevant:

    [ssl:warn] [pid 18092] AH01873: Init: Session Cache is not
    configured [hint: SSLSessionCache]

The entries below were a few lines above the entry above.

    [mpm_prefork:notice] [pid 18092] AH00163: Apache/2.4.12 (FreeBSD)
    PHP/5.4.40 OpenSSL/1.0.2a configured -- resuming normal operations
    [Wed May 06 13:42:18.774770 2015] [core:notice] [pid 18092] AH00094:
    Command line: '/usr/local/sbin/httpd -D NOHTTPACCEPT'
    [Wed May 06 13:42:39.303195 2015] [core:notice] [pid 18092] AH00052:
    child pid 18093 exit signal Segmentation fault (11)

The php error log was empty. Dovecot logs had nothing either.

Any thoughts? I'm pulling my hair out!

Thanks,
Bob

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