Excellent, I was able to find and correct the function in phpbb, thanks for the help.

<p>I'm trying to use Mercury to relay e-mail through Gmail from my phpbb3 forum for registration verification. I can send mail directly from Mercury fine, however when the board attempts to send something, MercuryC gives the following error:</p><p> 25 Nov 08 17:51, Servicing job MO00001D...  555 5.5.2 Syntax error. 5sm13504635yxt.1</p><p> I was originally using MercuryE, however it failed to connect to some addresses (notably hotmail). </p>

<p><span class="Apple-style-span" style="font-family: Tahoma; ">"555 5.5.2 Syntax error. 5sm13504635yxt.1" is an error message returned from the relaying server. Try switching on session logging briefly in MercuryC to find out exactly what causes this error.</span></p><p>/Rolf </p>

<p>This is what I get:</p><p> </p><p>00:50:09.390: --- Thu Nov 27 00:50:09 2008 ---</p><p>00:50:09.390: Connect to 'smtp.gmail.com', timeout 30.</p><p>00:50:10.484: [*] SSL/TLS session established: RC4, OFB mode, keysize 128 bits</p><p>00:50:10.484: [*] Certificate user is cn=smtp.gmail.com, o=Google Inc, l=Mountain View, sp=California, c=US</p><p>00:50:10.484: [*] Certificate is valid from Mon Jul 30 00:00:00 2007 to Thu Jul 29 23:59:59 2010</p><p>00:50:10.484: [*] Certificate fingerprint is F1D3DE599D9CE231EAAA2CA0FCAD9A61</p><p>00:50:10.484: >> 220 mx.google.com ESMTP 34sm2800147yxl.8<cr><lf></p><p>00:50:10.484: << EHLO aristocracy.admin<cr><lf></p><p>00:50:10.515: >> 250-mx.google.com at your service, [69.250.252.4]<cr><lf></p><p>00:50:10.515: >> 250-SIZE 35651584<cr><lf></p><p>00:50:10.515: >> 250-8BITMIME<cr><lf></p><p>00:50:10.515: >> 250-AUTH LOGIN PLAIN<cr><lf></p><p>00:50:10.515: >> 250 ENHANCEDSTATUSCODES<cr><lf></p><p>00:50:10.515: << AUTH LOGIN<cr><lf></p><p>00:50:10.562: >> 334 VXNlcm5hbWU6<cr><lf></p><p>00:50:10.562: << YXJpc3RvY3JhY3kuYWRtaW4=<cr><lf></p><p>00:50:10.593: >> 334 UGFzc3dvcmQ6<cr><lf></p><p>00:50:10.593: << c3VvbWFsYWluZW4=<cr><lf></p><p>00:50:11.203: >> 235 2.7.0 Accepted<cr><lf></p><p>00:50:11.203: << MAIL FROM:<<aristocracy.admin@gmail.com> SIZE=1291<cr><lf></p><p>00:50:11.250: >> 555 5.5.2 Syntax error. 34sm2800147yxl.8<cr><lf></p><p>00:50:11.250: << QUIT<cr><lf></p><p>00:50:11.281: >> 221 2.0.0 closing connection 34sm2800147yxl.8<cr><lf></p><p>00:50:11.281: --- Connection closed normally at Thu Nov 27 00:50:11 2008. ---</p><p>00:50:11.281:  </p>

<blockquote><p>00:50:11.203: << MAIL FROM:<<aristocracy.admin@gmail.com> SIZE=1291<cr><lf></p><p>00:50:11.250: >> 555 5.5.2 Syntax error. 34sm2800147yxl.8<cr><lf></p></blockquote><p>There is an extra < in the MAIL FROM address.   The extra < makes the address invalid.  This should be </p><p>MAIL FROM:<aristocracy.admin@gmail.com> SIZE=1291<cr><lf></p>